1977 Topps Jerry Koosman #300
1977
$1.77est. value (ungraded)
Prices updated 2026-10-18
Based on recorded sold prices how we price cards
Recent recorded prices
1 recorded price point for the 1977 Topps Jerry Koosman #300 from our sales and market data.
| Date | Source | Price |
|---|---|---|
| Oct 18, 2026 | Market value | $1.77 |
Jerry Koosman prices by grade
| Grade | Value | eBay |
|---|---|---|
| Ungraded | $1.77 | Buy on eBay ↗ |
| PSA 7 | $6.17 | Buy on eBay ↗ |
| PSA 8 | $19.99 | Buy on eBay ↗ |
| PSA 9 | $38.45 | Buy on eBay ↗ |
| Grade 9.5 | $116.52 | Buy on eBay ↗ |
| PSA 10 | $142.27 | Buy on eBay ↗ |
| BGS 10 | $185.00 | Buy on eBay ↗ |
| CGC 10 | $85.00 | Buy on eBay ↗ |
| SGC 10 | $63.27 | Buy on eBay ↗ |
Live on eBay
Affiliate — we may earn a commission1977 Topps Jerry Koosman #300 value & prices
The 1977 Topps Jerry Koosman #300 is a Baseball card released in 1977. Ungraded copies carry a market value of about $1.77.
An ungraded copy is worth around $1.77, a PSA 9 around $38.45, a PSA 10 (Gem Mint) around $142.27 and a pristine BGS 10 around $185.00. That's roughly a 80× premium for a gem-mint copy over raw — one of the clearest signals that condition-sensitive buyers dominate this card's market.
Is it worth grading?
With raw copies near $1.77 and top grades reaching $142.27, grading a sharp copy of this card can clearly pay for itself — the spread comfortably covers a typical ~$25.00 grading fee. The catch: only submit copies with strong centering, clean corners, and unmarked surfaces, because anything below a 9 usually erases the math.
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