PSA Graded
PSA 9 Mint
9
#2311993 Limited Edition Alpha Basalt Monolith #231
1993 Limited Edition Alpha · #231 · Basalt Monolith
uncommon
Tracking and alerts are included in the free trial.
Price history — PSA 9 Mint
| Grade | Price | 30d |
|---|---|---|
| BGS 10 PristineAI estimate | $103.72 | — |
| CGC 10 PristineAI estimate | $86.98 | — |
| PSA 10 Gem Mint | $83.24last sale Jul 2, 2026 | +6.2% |
| SGC 10 Gem MintAI estimate | $45.83 | — |
| CGC 9.5 Gem MintAI estimate | $42.91 | — |
| BGS 9.5 Gem Mint | $41.06last sale May 28, 2026 | +6.8% |
| BGS 9 Mint | $29.78last sale May 2, 2026 | 0.0% |
| CGC 9 MintAI estimate | $30.98 | — |
| PSA 9 Mint | $29.65last sale Jun 16, 2026 | +14.6% |
| SGC 9 MintAI estimate | $26.56 | — |
| BGS 8.5 NM-MT+AI estimate | $27.54 | — |
| CGC 8.5 NM-MT+AI estimate | $24.67 | — |
| PSA 8 NM-MT | $22.10last sale Dec 4, 2025 | -2.6% |
| SGC 8 NM-MTAI estimate | $19.80 | — |
| PSA 7 Near MintAI estimate | $10.87 | — |
| Raw (Near Mint) | $8.72last sale Apr 16, 2026 | -18.4% |
Recent sales
| Date | Grade | Price |
|---|---|---|
| Jul 2, 2026 | PSA 10 Gem Mint | $83.24 |
| Jun 16, 2026 | PSA 9 Mint | $33.10 |
| Jun 11, 2026 | PSA 9 Mint | $26.20 |
| May 28, 2026 | BGS 9.5 Gem Mint | $41.06 |
| May 2, 2026 | BGS 9 Mint | $29.78 |
| Apr 16, 2026 | Raw (Near Mint) | $6.90 |
| Apr 13, 2026 | Raw (Near Mint) | $10.54 |
| Mar 22, 2026 | Raw (Near Mint) | $10.83 |
| Feb 24, 2026 | Raw (Near Mint) | $10.11 |
| Feb 11, 2026 | PSA 9 Mint | $25.88 |
| Jan 16, 2026 | Raw (Near Mint) | $12.22 |
| Jan 9, 2026 | PSA 9 Mint | $35.52 |