1978 Kellogg's Ken Singleton #55
1978
See all Ken Singleton cards & values$1.35est. value (ungraded)
Prices updated 2026-10-22
Based on recorded sold prices how we price cards
Price by month
Average price of the 1978 Kellogg's Ken Singleton #55 each month, from 1 recorded price reading. Prices are re-checked regularly; a month's average counts each day from that month's first reading at the price that held that day.
| Month | Source | Average | Range |
|---|---|---|---|
| Oct 2026 | Market value | $1.35 | — |
Ken Singleton prices by grade
| Grade | Value | eBay |
|---|---|---|
| Ungraded | $1.35 | Buy on eBay ↗ |
| PSA 8 | $12.61 | Buy on eBay ↗ |
| PSA 9 | $19.02 | Buy on eBay ↗ |
| Grade 9.5 | $52.65 | Buy on eBay ↗ |
| PSA 10 | $62.34 | Buy on eBay ↗ |
| BGS 10 | $81.00 | Buy on eBay ↗ |
| CGC 10 | $37.00 | Buy on eBay ↗ |
| SGC 10 | $37.00 | Buy on eBay ↗ |
Live on eBay
Affiliate — we may earn a commission1978 Kellogg's Ken Singleton #55 value & prices
The 1978 Kellogg's Ken Singleton #55 is a Baseball card released in 1978. Ungraded copies carry a market value of about $1.35.
An ungraded copy is worth around $1.35, a PSA 9 around $19.02, a PSA 10 (Gem Mint) around $62.34 and a pristine BGS 10 around $81.00. That's roughly a 46× 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 $1.35 and top grades reaching $62.34, 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.