1999 SP Signature Autographs Jason Giambi #JaG
1999
See all Jason Giambi cards & valuesUncommon
$14.24est. value (ungraded)
Prices updated 2026-10-22
Based on recorded sold prices how we price cards
Card number
#JaG
Year
1999
Price by month
Average price of the 1999 SP Signature Autographs Jason Giambi #JaG 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.
Recorded high
$14.24
Recorded low
$14.24
| Month | Source | Average | Range |
|---|---|---|---|
| Oct 2026 | Market value | $14.24 | — |
Jason Giambi prices by grade
| Grade | Value | eBay |
|---|---|---|
| Ungraded | $14.24 | Buy on eBay ↗ |
| PSA 8 | $32.70 | Buy on eBay ↗ |
| PSA 9 | $64.90 | Buy on eBay ↗ |
| Grade 9.5 | $105.16 | Buy on eBay ↗ |
| PSA 10 | $336.48 | Buy on eBay ↗ |
| BGS 10 | $437.00 | Buy on eBay ↗ |
| CGC 10 | $202.00 | Buy on eBay ↗ |
| SGC 10 | $202.00 | Buy on eBay ↗ |
Jason Giambi parallels
1 version, each priced on its own. Most valuable first.
Live on eBay
Affiliate — we may earn a commission1999 SP Signature Autographs Jason Giambi #JaG value & prices
The 1999 SP Signature Autographs Jason Giambi #JaG is a Baseball card released in 1999. Ungraded copies carry a market value of about $14.24.
An ungraded copy is worth around $14.24, a PSA 9 around $64.90, a PSA 10 (Gem Mint) around $336.48 and a pristine BGS 10 around $437.00. That's roughly a 24× 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 $14.24 and top grades reaching $336.48, 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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