1999 SP Signature Autographs Ken Griffey Sr. #SR
1999
See all Ken Griffey Sr. cards & values1999 seasonSeattle MarinersKen Griffey Jr. career & card values
$19.33est. value (ungraded)
Prices updated 2026-10-22
Based on recorded sold prices how we price cards
Price by month
Average price of the 1999 SP Signature Autographs Ken Griffey Sr. #SR 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 | $19.33 | — |
Ken Griffey Sr. prices by grade
| Grade | Value | eBay |
|---|---|---|
| Ungraded | $19.33 | Buy on eBay ↗ |
| PSA 8 | $30.00 | Buy on eBay ↗ |
| PSA 9 | $38.00 | Buy on eBay ↗ |
| Grade 9.5 | $77.16 | Buy on eBay ↗ |
| PSA 10 | $135.00 | Buy on eBay ↗ |
| BGS 10 | $176.00 | Buy on eBay ↗ |
| CGC 10 | $81.00 | Buy on eBay ↗ |
| SGC 10 | $81.00 | Buy on eBay ↗ |
Live on eBay
Affiliate — we may earn a commission1999 SP Signature Autographs Ken Griffey Sr. #SR value & prices
The 1999 SP Signature Autographs Ken Griffey Sr. #SR is a Baseball card released in 1999. Ungraded copies carry a market value of about $19.33.
An ungraded copy is worth around $19.33, a PSA 9 around $38.00, a PSA 10 (Gem Mint) around $135.00 and a pristine BGS 10 around $176.00. That's roughly a 7.0× 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 $19.33 and top grades reaching $135.00, 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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