1978 Topps Mario Guerrero #339
1978
$1.17est. 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 1978 Topps Mario Guerrero #339 from our sales and market data.
| Date | Source | Price |
|---|---|---|
| Oct 18, 2026 | Market value | $1.17 |
Mario Guerrero prices by grade
| Grade | Value | eBay |
|---|---|---|
| Ungraded | $1.17 | Buy on eBay ↗ |
| PSA 8 | $12.65 | Buy on eBay ↗ |
| PSA 9 | $18.25 | Buy on eBay ↗ |
| Grade 9.5 | $48.52 | Buy on eBay ↗ |
| PSA 10 | $49.00 | Buy on eBay ↗ |
| BGS 10 | $64.00 | Buy on eBay ↗ |
| CGC 10 | $29.00 | Buy on eBay ↗ |
| SGC 10 | $29.00 | Buy on eBay ↗ |
Live on eBay
Affiliate — we may earn a commission1978 Topps Mario Guerrero #339 value & prices
The 1978 Topps Mario Guerrero #339 is a Baseball card released in 1978. Ungraded copies carry a market value of about $1.17.
An ungraded copy is worth around $1.17, a PSA 9 around $18.25, a PSA 10 (Gem Mint) around $49.00 and a pristine BGS 10 around $64.00. That's roughly a 42× 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?
The spread between raw ($1.17) and top-graded ($49.00) copies is fairly tight, so grading this card only makes financial sense for truly flawless copies — or for collectors who simply prefer slabbed cards for protection and display.
More from 1978 Topps
