How much is a 1987 Topps #366 mark mcgwire worth?

Raw copies sold for a median of $40 in the last 30 days across marketplaces, from 1 sales. PSA 10 copies sold for a median of $4,000.

Is the mark mcgwire worth grading?

A PSA 10 sells for about $3,960 more than a raw copy right now. Grading runs about $25 and 30 to 45 days, so it pays when the card is clean.

Where do these prices come from?

Completed sales across marketplaces from the last 90 days, recomputed daily. Lots, sealed product, reprints, damaged copies and price outliers are excluded and shown as excluded in the recent sales list. Last updated October 27, 2026.

Card values / Baseball / mark mcgwire

1987 Topps #366 mark mcgwire Card Value

Recent sales across marketplaces, recomputed daily. Raw and graded shown separately. Updated October 27, 2026.

Raw, last 30 days

$40

1 sales

PSA 10

$4,000

5 sales

90-day trend

Flat

raw median, recent vs prior

Liquidity

Low

0.13 sales a day

Recent sales behind the number

Date	Listing	Grade	Sold	Used
2026-09-30	1987 TOPPS #366 MARK McGWIRE ATHLETICS PSA 10	PSA 10	$207.50	Included
2026-09-30	1987 Topps Mark McGwire #366 Autographed Signed W/COA From 1987 Card Show	Raw	$74.99	Excluded: lot, sealed or reprint
2026-09-30	1987 Topps Tiffany #366 Mark McGwire Oakland A's PSA 9 MINT	PSA 9	$90.49	Included
2026-09-30	1987 Topps Set-Break #366 Mark Mcgwire Auto PSA 10 GEM MINT AUTO 10	PSA 10	$1225.00	Excluded: lot, sealed or reprint
2026-09-30	1987 TOPPS #366 MARK McGWIRE ATHLETICS PSA 10	PSA 10	$207.50	Included
2026-09-30	1987 Topps Mark McGwire #366 Autographed Signed W/COA From 1987 Card Show	Raw	$74.99	Excluded: lot, sealed or reprint
2026-09-30	1987 Topps Tiffany #366 Mark McGwire Oakland A's PSA 9 MINT	PSA 9	$90.49	Included
2026-09-30	1987 Topps Set-Break #366 Mark Mcgwire Auto PSA 10 GEM MINT AUTO 10	PSA 10	$1225.00	Excluded: lot, sealed or reprint
2026-09-29	1987 TOPPS TIFFANY #366 MARK MCGWIRE PSA 10 AUTO 10	PSA 10	$4000.00	Included
2026-09-29	1987 Topps Mark McGwire Rookie RC #366 Athletics BGS 9.5 GEM MINT	BGS 9.5	$56.33	Included

12 sales used, 4 excluded, from the last 90 days. Showing the 10 most recent.

By grade

PSA

$11

1 sales

Raw

$40

1 sales

PSA 9

$90

2 sales

PSA 10

$4,000

5 sales

BGS 9.5

$56

3 sales

Grading gap

+$3,960

PSA 10 over raw. Run the numbers

Same player, same set

1999 Topps Topps Chrome #AE1 mark mcgwire Refractor · $58

Questions people ask

How much is a 1987 Topps #366 mark mcgwire worth?: Raw copies sold for a median of $40 in the last 30 days across marketplaces, from 1 sales. PSA 10 copies sold for a median of $4,000.
Is the mark mcgwire worth grading?: A PSA 10 sells for about $3,960 more than a raw copy right now. Grading runs about $25 and 30 to 45 days, so it pays when the card is clean.
Where do these prices come from?: Completed sales across marketplaces from the last 90 days, recomputed daily. Lots, sealed product, reprints, damaged copies and price outliers are excluded and shown as excluded in the recent sales list. Last updated October 27, 2026.

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