PSA
10
1999 / Pokémon / Base Set
Onix#56
PSA
10
1999 / Pokémon / Base Set
1999 Pokémon Base Set Onix #56 PSA 10
▣Population report
DistributionTap to filter
❖Market insightsread from 70 sales
Market cap$169K
PSA$146K87%CGC$23K13%
PSA 10
$82K
PSA 9
$44K
PSA 8
$20K
Σ population × avg sale, per graded tier
Grade-10 premium ladder
AnchorPSA 10 · $144what each grade-10 label trades at vs PSA 10
PSA 10 · 1.0×
PSA 10
30 sales
1.00×
$144
CGC 10 Pristine
4 sales
0.52×
$76
CGC 10
4 sales
0.46×
$67
Premium vs PSA 10Discount vs PSA 10Anchor
Median of the last 12 months of non-suspicious single-card sales · same numeric grade, grader/label varies · n = sales.
−18%cheaper at auction (90d)
30%reach PSA 10
2%reach CGC Pristine
✦Catalog entry№ 67975
Reference
PSA 10
Brand
Pokémon
Character
Onix
Year
1999
Set
Base Set
Card №
56
Language
English
◈Other varieties
◆ Market brief
Estimated at $144 in PSA 10
1999 Pokémon Base Set Onix #56 Unlimited
The 1999 Pokémon Base Set Onix #56 Unlimited has an estimated PSA 10 value of $144 on Assetra. Its latest recorded PSA 10 sale was $140 on 4 Nov 2026, following $160 in November 2026.
Assetra tracks 79 recorded sales since January 2026, 47 of them PSA 10, ranging from $9 to $808.
PSA population: 1,928 graded copies, 570 PSA 10 (30%). CGC: a further 1,704.
Based on 79 recorded sales through 4 Nov 2026. Past sales do not guarantee current value. How Assetra builds these numbers
