# Mark McGwire #366

The Mark McGwire (#366, Topps, 1987) is a common Baseball card. Across 25 ZeroPop community scans it averages a 7.0/10 grade (NM), with 4% grading Gem Mint 9.5 or higher. Its current raw market value is about $3.

Canonical URL: https://zeropop.app/card/mark-mcgwire-topps-366

## Card details

- Set: Topps
- Number: #366
- Year: 1987
- Game: Baseball
- Rarity: Common

## Market price

- Current raw value: $3
- Source: ebay+gemini
- 23-day change: -63.6%

## Community grade population

- Scans: 25
- Average overall grade: 7.0 / 10
- Average corners: 7.4
- Average edges: 7.5
- Average surface: 7.5
- Average centering: 8.4
- Gem Mint (9.5+) rate: 4%
- Highest community grade: 9.5

### Value by grade

| Grade | % of scans | Avg value |
|-------|------------|-----------|
| 9.5 | 4% | $2 |
| 9 | 12% | $14 |
| 8.5 | 4% | $19 |
| 8 | 44% | $14 |
| 7 | 20% | $7 |
| 6 & below | 16% | $19 |

### Most common condition issues

- Whitening: 52% of scans
- Fuzzy: 20% of scans
- Whitening (Front): 12% of scans

## Is it worth grading?

A raw Mark McGwire carries a market value of $3. Community scans grading 9.5 are worth roughly $2, about 0.8× the raw price. Submission economics depend on the grade your specific copy would actually receive.

## Frequently asked questions

### What is a Mark McGwire worth?

A raw (ungraded) Mark McGwire from Topps currently carries a market value of about $3. Graded copies sell for more. The value ladder on this page shows the estimated price at each grade.

### What grade do most Mark McGwire cards get?

Across 25 community scans on ZeroPop, the Mark McGwire averages a 7.0/10 overall grade. 4% reach Gem Mint (9.5+). Sub-grade averages: corners 7.4, edges 7.5, surface 7.5, centering 8.4.

### What are the most common defects on a Mark McGwire?

The most frequently flagged condition issues on scanned Mark McGwire cards are Whitening (52% of scans), Fuzzy (20% of scans), Whitening (Front) (12% of scans).

### Is the Mark McGwire worth grading?

Whether the Mark McGwire is worth submitting depends on its raw value versus its graded value and your predicted grade. ZeroPop scans the card, predicts a PSA/BGS/CGC grade, and runs the break-even math before you pay submission fees.

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Source: ZeroPop community grade data. ZeroPop is an AI-powered trading card grading app at https://zeropop.app