Expansion Sheet · Series 1 Blue

Chansey Series 1 #S12052704, Series 1 Blue, Expansion Sheet

Japanese edition

Card number: #S12052704
Rarity: Promo
Finish: Promo

Expansion Sheet Series 1 BlueVNDS12052704P:JA

TKRVNDS12052704P:JA-P10

Grading toolPro

TCGBerg fair value· PSA 10

$4,433

Our estimate of this card's fair value, calculated from recorded sales.

Sales evidenceVery strong

30D performance10.0%

30D: ↓ 10.0%
YTD: ↑ 451.5%
Market cap: $877.8K
Volatility: 5.2%

Last sale (Sep 23, 2026)Last sale

$4,100

PSA 10 · Sep 23, 2026

7.5% below TCGBerg fair value

5-sale avg

$4,287

last 5 sales

Population · PSA 10

198

graded copies

TCGBerg fair value · PSA 10

$4,433

30D10.0%YTD451.5%

Sales evidenceVery strong

Market cap

$877.8K

fair value x population

Population

198

graded copies

Last sale

$4,100

-7.5% vs fair

5-sale avg

$4,287

recent sales

GradingPro

Price history

Open terminalPro

Weekly fair value for PSA 10. Shaded area is the confidence band: how precisely we can pin the value; it tightens as more sales confirm it. Dots are individual sales.

TCGBerg fair value · PSA 10Sale below fairSale above fairOutlier

Oct 12, 202552 weekly points · 34 salesSep 29, 2026

Behind the scenes

What goes into this price, and how much we know.

Recent sales10 tracked

Most recent transactions. From public auction comps and dealer reporting. Showing 10 of 10; delta vs fair value is the difference between the sale price and the grade's quoted fair value on that date.

Date	Grade	Price	Source	vs TCGBerg FV
Sep 23, 2026	PSA9	$516	ebay	10.4%
Sep 23, 2026	PSA10	$4,100	ebay	7.3%
Sep 23, 2026	PSA10	$4,600	ebay	4.0%
Sep 21, 2026	PSA6	$181	ebay	0.4%
Sep 20, 2026	PSA8	$375	ebay	4.4%
Sep 19, 2026	PSA9	$600	ebay	0.1%
Sep 17, 2026	PSA10	$3,811	ebay	13.6%
Sep 16, 2026	PSA10	$4,675	ebay	5.9%
Sep 10, 2026	PSA9	$700	ebay	18.5%
Sep 9, 2026	PSA8	$396	ebay	9.5%

$516
Sep 23, 2026 · via ebay
PSA9versus fair value, down 10.4%
$4,100
Sep 23, 2026 · via ebay
PSA10versus fair value, down 7.3%
$4,600
Sep 23, 2026 · via ebay
PSA10versus fair value, up 4.0%
$181
Sep 21, 2026 · via ebay
PSA6versus fair value, up 0.4%
$375
Sep 20, 2026 · via ebay
PSA8versus fair value, down 4.4%
$600
Sep 19, 2026 · via ebay
PSA9versus fair value, up 0.1%
$3,811
Sep 17, 2026 · via ebay
PSA10versus fair value, down 13.6%
$4,675
Sep 16, 2026 · via ebay
PSA10versus fair value, up 5.9%
$700
Sep 10, 2026 · via ebay
PSA9versus fair value, up 18.5%
$396
Sep 9, 2026 · via ebay
PSA8versus fair value, up 9.5%

All grades matrix

Every grade we track for this printing. Click any column header to sort; the rightmost column jumps you to listings for that grade.

PSA10$4,433
1d 0.2%7d 0.7%30d 10.0%
Pop
198
Mcap
$877.8K
Evidence
Very strong
Last
$4,100
PSA9$576
1d 0.0%7d 3.6%30d 6.8%
Pop
239
Mcap
$137.6K
Evidence
Strong
Last
$516
PSA8$409
1d 1.0%7d 4.0%30d 30.5%
Pop
70
Mcap
$28.6K
Evidence
Limited
Last
$375


PSA10	$4,433	198	$877.8K	0.2%	0.7%	10.0%	3.5%	809.3%	Very strong	$4,1006d ago
PSA9	$576	239	$137.6K	0.0%	3.6%	6.8%	0.9%	323.1%	Strong	$5166d ago
PSA8	$409	70	$28.6K	1.0%	4.0%	30.5%	74.1%	469.2%	Limited	$3751w ago
PSA7	$271	8	$2.2K	0.5%	2.0%	0.4%	21.3%	289.9%	Sparse	-
PSA6	$180	9	$1.6K	0.0%	0.0%	22.7%	15.4%	173.6%	Very strong	$1811w ago
Raw	$217	-	-	0.0%	0.0%	0.0%	6.6%	-	-	-

TCGBerg fair value by grade

Value at each grade and ungraded condition, on a log scale that spans the full range from raw (Damaged) at $78 up to gem-mint at $4.4K. Log scale. Tap a row to switch the whole page.

Raw NM$217Ungraded · market price
Raw LP$171Ungraded · market price
Raw MP$130Ungraded · market price
Raw HP$110Ungraded · market price
Raw Damaged$78Ungraded · market price

hatched = market price, not a TCGBerg fair value

Population & rarity

524 graded copies of Chansey Series 1 Series 1 Blue across 5 grades. The selected grade is highlighted.

PSA 10

198 · 38%

PSA 9

239 · 46%

PSA 8

70 · 13%

PSA 7

8 · 1.5%

PSA 6

9 · 1.7%

PSA 10 makes up 38% of graded copies: 198 of 524. PSA 9 is the most common grade (46%).

Relative valuation vs. index

How PSA 10 has moved relative to Expansion Sheet · Series 1 Blue · Composite since Aug 2, 2026. Both indexed to 100 at the index’s inception. Card underperformed by 77.7 pp.

About Expansion SheetParent set

This printing in the context of its parent set: total set cap and this printing's share of it.

Browse all sets →

Set total cap

$57.59M

across all printings

This printing's share

1.8%

of total set cap

Implied printing cap

$1.05M

share × set cap

Browse all sets →

Chansey Series 1 - SERIES 1 at PSA 10 carries a TCGBerg fair value of $4,433 as of 2026-09-28. We track a TCGBerg fair value across 5 grades from Expansion Sheet, from PSA 6 up to PSA 10. A graded population of 198 copies sits behind the PSA 10 grade. The PSA 10 valuation rests on very strong sales evidence. Over the past 30 days, the PSA 8 TCGBerg fair value has risen 30.5%.

Show more analysisAnalysis, commentary & FAQ

PSA 10 commentary

The TCGBerg fair value of a PSA 10 Chansey Series 1 - SERIES 1 is $4,433 as of 2026-09-28. 198 copies have been graded at this level. This valuation rests on very strong sales evidence. Over the past 30 days the TCGBerg fair value has fallen 10.0%. The most recent recorded sale was $4,100 on 2026-09-23.

PSA 10 - frequently asked

What is the TCGBerg fair value of a PSA 10 Chansey Series 1 - SERIES 1?

$4,433 as of 2026-09-28, our model-derived fair value for a PSA 10 Chansey Series 1 - SERIES 1 based on recent graded sales.

How rare is a PSA 10 Chansey Series 1 - SERIES 1?

198 copies have been graded at PSA 10, the graded population behind this atom.

How has the PSA 10 Chansey Series 1 - SERIES 1 price moved recently?

Its TCGBerg fair value has fallen 10.0% over the past 30 days.

Frequently asked

What is the TCGBerg fair value of a PSA 10 Chansey Series 1 - SERIES 1?: $4,433 as of 2026-09-28, our model-derived fair value for a PSA 10 Chansey Series 1 - SERIES 1 based on recent graded sales.
How rare is a PSA 10 Chansey Series 1 - SERIES 1?: 198 copies have been graded at PSA 10, the graded population behind this atom.
How has the PSA 10 Chansey Series 1 - SERIES 1 price moved recently?: Its TCGBerg fair value has fallen 10.0% over the past 30 days.

PSA 9 commentary

The TCGBerg fair value of a PSA 9 Chansey Series 1 - SERIES 1 is $576 as of 2026-09-28. 239 copies have been graded at this level. This valuation rests on strong sales evidence. Over the past 30 days the TCGBerg fair value has risen 6.8%. The most recent recorded sale was $516 on 2026-09-23.

PSA 9 - frequently asked

What is the TCGBerg fair value of a PSA 9 Chansey Series 1 - SERIES 1?

$576 as of 2026-09-28, our model-derived fair value for a PSA 9 Chansey Series 1 - SERIES 1 based on recent graded sales.

How rare is a PSA 9 Chansey Series 1 - SERIES 1?

239 copies have been graded at PSA 9, the graded population behind this atom.

How has the PSA 9 Chansey Series 1 - SERIES 1 price moved recently?

Its TCGBerg fair value has risen 6.8% over the past 30 days.

Frequently asked

What is the TCGBerg fair value of a PSA 9 Chansey Series 1 - SERIES 1?: $576 as of 2026-09-28, our model-derived fair value for a PSA 9 Chansey Series 1 - SERIES 1 based on recent graded sales.
How rare is a PSA 9 Chansey Series 1 - SERIES 1?: 239 copies have been graded at PSA 9, the graded population behind this atom.
How has the PSA 9 Chansey Series 1 - SERIES 1 price moved recently?: Its TCGBerg fair value has risen 6.8% over the past 30 days.

PSA 8 commentary

The TCGBerg fair value of a PSA 8 Chansey Series 1 - SERIES 1 is $409 as of 2026-09-28. 70 copies have been graded at this level. This valuation rests on limited sales evidence. Over the past 30 days the TCGBerg fair value has risen 30.5%. The most recent recorded sale was $375 on 2026-09-20.

PSA 8 - frequently asked

What is the TCGBerg fair value of a PSA 8 Chansey Series 1 - SERIES 1?

$409 as of 2026-09-28, our model-derived fair value for a PSA 8 Chansey Series 1 - SERIES 1 based on recent graded sales.

How rare is a PSA 8 Chansey Series 1 - SERIES 1?

70 copies have been graded at PSA 8, the graded population behind this atom.

How has the PSA 8 Chansey Series 1 - SERIES 1 price moved recently?

Its TCGBerg fair value has risen 30.5% over the past 30 days.

Frequently asked

What is the TCGBerg fair value of a PSA 8 Chansey Series 1 - SERIES 1?: $409 as of 2026-09-28, our model-derived fair value for a PSA 8 Chansey Series 1 - SERIES 1 based on recent graded sales.
How rare is a PSA 8 Chansey Series 1 - SERIES 1?: 70 copies have been graded at PSA 8, the graded population behind this atom.
How has the PSA 8 Chansey Series 1 - SERIES 1 price moved recently?: Its TCGBerg fair value has risen 30.5% over the past 30 days.

PSA 7 commentary

The TCGBerg fair value of a PSA 7 Chansey Series 1 - SERIES 1 is $271 as of 2026-09-28. 8 copies have been graded at this level. This valuation rests on sparse sales evidence. Over the past 30 days the TCGBerg fair value has risen 0.4%.

PSA 7 - frequently asked

What is the TCGBerg fair value of a PSA 7 Chansey Series 1 - SERIES 1?

$271 as of 2026-09-28, our model-derived fair value for a PSA 7 Chansey Series 1 - SERIES 1 based on recent graded sales.

How rare is a PSA 7 Chansey Series 1 - SERIES 1?

8 copies have been graded at PSA 7, the graded population behind this atom.

How has the PSA 7 Chansey Series 1 - SERIES 1 price moved recently?

Its TCGBerg fair value has risen 0.4% over the past 30 days.

Frequently asked

What is the TCGBerg fair value of a PSA 7 Chansey Series 1 - SERIES 1?: $271 as of 2026-09-28, our model-derived fair value for a PSA 7 Chansey Series 1 - SERIES 1 based on recent graded sales.
How rare is a PSA 7 Chansey Series 1 - SERIES 1?: 8 copies have been graded at PSA 7, the graded population behind this atom.
How has the PSA 7 Chansey Series 1 - SERIES 1 price moved recently?: Its TCGBerg fair value has risen 0.4% over the past 30 days.

PSA 6 commentary

The TCGBerg fair value of a PSA 6 Chansey Series 1 - SERIES 1 is $180 as of 2026-09-28. 9 copies have been graded at this level. This valuation rests on very strong sales evidence. Over the past 30 days the TCGBerg fair value has fallen 22.7%. The most recent recorded sale was $180 on 2026-09-21.

PSA 6 - frequently asked

What is the TCGBerg fair value of a PSA 6 Chansey Series 1 - SERIES 1?

$180 as of 2026-09-28, our model-derived fair value for a PSA 6 Chansey Series 1 - SERIES 1 based on recent graded sales.

How rare is a PSA 6 Chansey Series 1 - SERIES 1?

9 copies have been graded at PSA 6, the graded population behind this atom.

How has the PSA 6 Chansey Series 1 - SERIES 1 price moved recently?

Its TCGBerg fair value has fallen 22.7% over the past 30 days.

Frequently asked

What is the TCGBerg fair value of a PSA 6 Chansey Series 1 - SERIES 1?: $180 as of 2026-09-28, our model-derived fair value for a PSA 6 Chansey Series 1 - SERIES 1 based on recent graded sales.
How rare is a PSA 6 Chansey Series 1 - SERIES 1?: 9 copies have been graded at PSA 6, the graded population behind this atom.
How has the PSA 6 Chansey Series 1 - SERIES 1 price moved recently?: Its TCGBerg fair value has fallen 22.7% over the past 30 days.

Every printing of Chansey Series 1 and the indices that include this card in their constituent basket.

Indices containing this card

Parent set

Expansion Sheet

Set total cap

$57.09M

Date

Grade

Price

Source

vs TCGBerg FV

Sep 23, 2026

PSA9

$516

ebay

10.4%

Sep 23, 2026

PSA10

$4,100

ebay

7.3%

Sep 23, 2026

PSA10

$4,600

ebay

4.0%

Sep 21, 2026

PSA6

$181

ebay

0.4%

Sep 20, 2026

PSA8

$375

ebay

4.4%

Sep 19, 2026

PSA9

$600

ebay

0.1%

Sep 17, 2026

PSA10

$3,811

ebay

13.6%

Sep 16, 2026

PSA10

$4,675

ebay

5.9%

Sep 10, 2026

PSA9

$700

ebay

18.5%

Sep 9, 2026

PSA8

$396

ebay

9.5%

PSA10

$4,433

198

$877.8K

0.2%

0.7%

10.0%

Very strong

$4,1006d ago

PSA9

$576

239

$137.6K

0.0%

3.6%

6.8%

Strong

$5166d ago

PSA8

$409

$28.6K

1.0%

4.0%

30.5%

Limited

$3751w ago

PSA7

$271

$2.2K

0.5%

2.0%

0.4%

Sparse

PSA6

$180

$1.6K

0.0%

22.7%

Very strong

$1811w ago

Raw

$217

0.0%

Chansey Series 1 #S12052704, Series 1 Blue, Expansion Sheet

Behind the scenesHow the published fair value for this grade was produced: the estimates that fed it, their share of the starting mix, and every recorded change afterwards. It describes one saved calculation, not a live recomputation.

Recent sales10 tracked

All grades matrix

Population & rarityHow Chansey Series 1's graded copies are spread across grades. Each bar is the number of copies graded at that grade; the percentage is that grade's share of the total graded population. Fewer copies at a grade = scarcer = a scarcity premium.

Relative valuation vs. indexBoth series are indexed to 100 at Aug 2, 2026, the index’s inception date, not the start of the selected range. A divergence means the card has outperformed or underperformed the index since then, by exactly the percentage-point gap.

About Expansion SheetParent set

Analysis

PSA 10 commentary

PSA 10 - frequently asked

PSA 9 commentary

PSA 9 - frequently asked

PSA 8 commentary

PSA 8 - frequently asked

PSA 7 commentary

PSA 7 - frequently asked

PSA 6 commentary

PSA 6 - frequently asked

Related

Indices containing this card

Parent set

Behind the scenesHow the published fair value for this grade was produced: the estimates that fed it, their share of the starting mix, and every recorded change afterwards. It describes one saved calculation, not a live recomputation.

Recent sales10 tracked

All grades matrix

Population & rarityHow Chansey Series 1's graded copies are spread across grades. Each bar is the number of copies graded at that grade; the percentage is that grade's share of the total graded population. Fewer copies at a grade = scarcer = a scarcity premium.

Relative valuation vs. indexBoth series are indexed to 100 at Aug 2, 2026, the index’s inception date, not the start of the selected range. A divergence means the card has outperformed or underperformed the index since then, by exactly the percentage-point gap.

About Expansion SheetParent set

Analysis

PSA 10 commentary

PSA 10 - frequently asked

PSA 9 commentary

PSA 9 - frequently asked

PSA 8 commentary

PSA 8 - frequently asked

PSA 7 commentary

PSA 7 - frequently asked

PSA 6 commentary

PSA 6 - frequently asked

Related

Indices containing this card

Parent set

Behind the scenes

Population & rarity

Relative valuation vs. index

Behind the scenes

Population & rarity

Relative valuation vs. index