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1987 Topps Mark McGwire #366
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1987 Topps Mark McGwire #366

Baseball
1987

Player: Mark McGwire

Brand: Topps

Description

Step up to the plate with one of the most iconic pieces of "Junk Wax" history: the **1987 Topps Mark McGwire #366**. Featuring the legendary wood-grain border design—a nostalgic 25th-anniversary tribute to the 1962 set—this card is a quintessential staple for any serious baseball collector. The dark, faux-wood edges make this specific card a "condition sensitive" classic, as the borders are notoriously prone to chipping, making well-preserved examples highly sought after in today’s market. This card captures "Big Mac" at the dawn of his historic career, marking his first appearance in a flagship Topps set wearing the Oakland Athletics green and gold. The 1987 season was a masterclass in power hitting; McGwire shattered the rookie home run record with 49 long balls, earning him a unanimous American League Rookie of the Year title. As one half of the famed "Bash Brothers," McGwire’s presence on this card evokes the raw power and excitement that defined 1980s baseball. Whether you are a lifelong A's fan or a dedicated hobbyist looking to complete the 1987 Topps run, this Mark McGwire card represents a transformative era in the sport. Its enduring popularity lies in its perfect blend of aesthetic charm and historical significance. Adding this piece to your collection is more than just an acquisition—it is a tribute to one of the most dominant home run hitters to ever step into the batter's box.

Authenticated

Insured Shipping

Verified Seller

FLIPSY Score

8.8/10

HIGH GRADE

PSA 10 Probability: 10%

Data Confidence: MEDIUM

Ref: PSA 9 avg $65 · Actual Auction Data

Scan ID: FS-D230-X

Tap to view breakdown

Authentic

Price

Final Sale

$15

↑ PSA 10 upside: ~$1,250

Ref: Actual Auction Data (Last 90 Days)

Verified by Flipsy AI

Technical Grading Matrix

FLIPSY Score

8.8

Centering8.5/10
Corners8.5/10
Edges9/10
Surface9/10
PSA 10 Confidence91%
© Flipsy AI — Proprietary Grade Analysis
🔬

Forensic Edge Report

MEF Engine · Heatmap · Arbitrage · Authentication

No Book Prices. No Guesses. Just the Market.

Ref: Actual Auction Data (Last 90 Days) · PSA · eBay · Goldin · Cardladder · PWCC

Market Range · Based on FLIPSY 8.8 Score

PSA 8

NM-MT

$15

+0% vs raw

PSA 9 ← Your Grade

Mint

Anchor

$19

+27% vs raw

Actual Auction Data

PSA 10

Gem 🏆

Gem Mint Potential

$200

+1233% vs raw

View full grade spectrum (PSA 1–10)

PSA 3

$5

-67%

PSA 4

$8

-47%

PSA 5

$6

-60%

PSA 6

$10

-33%

PSA 7

$12

-20%

PSA 8

$15

+0%

PSA 9

$19

+27%

PSA 10

$200

+1233%

Gem Mint Potential

FLIPSY 8.8 (Current)$15
PSA 9$19
PSA 9$19
🏆 PSA 10 Gem Mint$200

⚠ PSA 10 Pop: ~15000 known copies

Realized Upside to PSA 9

PSA 9 Value

$19

Fees + Shipping

-$44

Net Profit

$40

Grading fee ~$19 · Shipping ~$25 · Actual auction comps

The 1987 Topps Mark McGwire #366 is a high-population junk wax era rookie card. While iconic, the massive supply keeps values low, making it a poor candidate for raw-to-graded arbitrage due to high grading and shipping costs relative to the PSA 9 market value.

Ref: Actual Auction Data (Last 90 Days) · Not a guarantee of grade or value.