1999 Upper Deck Black Diamond Greg Maddux Double #9
1999
See all Greg Maddux cards & values$3.69est. value (ungraded)
Prices updated 2026-10-22
Based on recorded sold prices how we price cards
Price by month
Average price of the 1999 Upper Deck Black Diamond Greg Maddux Double #9 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 | $3.69 | — |
Greg Maddux prices by grade
| Grade | Value | eBay |
|---|---|---|
| Ungraded | $3.69 | Buy on eBay ↗ |
| PSA 8 | $7.72 | Buy on eBay ↗ |
| PSA 9 | $14.38 | Buy on eBay ↗ |
| Grade 9.5 | $16.00 | Buy on eBay ↗ |
Live on eBay
Affiliate — we may earn a commission1999 Upper Deck Black Diamond Greg Maddux Double #9 value & prices
The 1999 Upper Deck Black Diamond Greg Maddux Double #9 is a Baseball card (Double parallel) released in 1999. Ungraded copies carry a market value of about $3.69.
An ungraded copy is worth around $3.69 and a PSA 9 around $14.38.
Is it worth grading?
The spread between raw ($3.69) and top-graded ($14.38) 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 1999 Upper Deck Black Diamond
Other Greg Maddux cards
