1999 Upper Deck Encore Ken Griffey Jr. #166
1999
See all Ken Griffey Jr. cards & values1999 seasonSeattle MarinersKen Griffey Jr. career & card values
$14.98est. 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 Encore Ken Griffey Jr. #166 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 | $14.98 | — |
Ken Griffey Jr. prices by grade
| Grade | Value | eBay |
|---|---|---|
| Ungraded | $14.98 | Buy on eBay ↗ |
| PSA 8 | $5.88 | Buy on eBay ↗ |
| PSA 9 | $20.50 | Buy on eBay ↗ |
| Grade 9.5 | $109.60 | Buy on eBay ↗ |
| PSA 10 | $155.00 | Buy on eBay ↗ |
| BGS 10 | $202.00 | Buy on eBay ↗ |
| CGC 10 | $93.00 | Buy on eBay ↗ |
| SGC 10 | $93.00 | Buy on eBay ↗ |
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Affiliate — we may earn a commission1999 Upper Deck Encore Ken Griffey Jr. #166 value & prices
The 1999 Upper Deck Encore Ken Griffey Jr. #166 is a Baseball card released in 1999. Ungraded copies carry a market value of about $14.98.
An ungraded copy is worth around $14.98, a PSA 9 around $20.50, a PSA 10 (Gem Mint) around $155.00 and a pristine BGS 10 around $202.00. That's roughly a 10× 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 $14.98 and top grades reaching $155.00, 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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