Cornerstone Mask Ogerpon ex
Twilight Masquerade · #199 · UR
Cornerstone Mask Ogerpon ex
Twilight Masquerade · #199 · UR
Overview
Fair-value verdict
Raw
$3.59
PREMIUM +101%Modeled fair value $1.79
Priced above fair value.
Demand Fading Demand is softening.
Sales −45% · Listings +2% · Price 0%
PSA 10
$59.99
Grading How often this card grades PSA 10 (gem rate) and how many PSA 10s exist.
Gem rate 36% · 170 PSA 10s
Investment Score
Cornerstone Mask Ogerpon ex scores 29/100. We're withholding a letter grade because it has no PSA-10 graded price yet, so the score leans on demand signals. It's trading 101% above our fair value. It's one of the lower-priced cards in Twilight Masquerade. It trades at a moderate pace.
- Demandlimited data1.0
- Scarcity5.7
- Stability8.4
This is a snapshot of demand fundamentals, not a forecast and not financial advice. "Gaining steam" just shows that the price has moved recently, not that it'll keep moving. The score measures durability, not how a card behaves in a crash. And keep an eye out for reprints, which can crash a chase card fast no matter how high the grade. Scores compare cards within the modern era (Mega Evolution, Scarlet & Violet, Sword & Shield) — not against vintage.
Price chart
Price history
Sep 12, 2026
Most recent PSA 10 sale · $59.99 · Jun 21, 2026
Grading
Grade ladder
Confidence (High / Med / Low) is how much recorded sale history backs the price — Low means only a few sales, so treat it as directional. Prices are eBay-sold medians; ×raw is the grading premium; sales count the last 30 days.| Grade | Price | × Raw | Last sale | Sales (30d) | Confidence |
|---|---|---|---|---|---|
| Raw | $3.59 | — | $8 Jul 28 | 0 | High |
 10 Shown as the standard-10 median. The CGC 10 bucket may include the occasional Pristine 10 / Black Label sale; a separate line for those is coming. | $9.00 | 2.5× | $9 Jan 6 | 0 | Low |
 10 | $18.50 | 5.2× | $19 Mar 1 | 0 | Low |
10 Shown as the standard-10 median. The CGC 10 bucket may include the occasional Pristine 10 / Black Label sale; a separate line for those is coming. $9.002.5×10$18.505.2×Prices are eBay-sold medians; last sale is the most recent single sale; sales count the last 30 days. Confidence reflects the full sale history behind each price — low-confidence rows rest on few sales, treat as directional.
Grade distribution
- PSA 1017036.2%
- PSA 924652.3%
- PSA 8418.7%
- PSA 771.5%
- 6 & below61.3%
PSA population from our own psacard.com read, Aug 25, 2026. Half grades count toward the grade below (a 9.5 is a 9).
Market
Supply & Demand
Supply is the TCGplayer listing count; demand pressure = weekly TCGplayer sales ÷ listings (soft → hot), a single-venue sell-through read. The supply-trend gauge reads eBay where we have it, with the TCGplayer listings trend surfacing as its history matures. Descriptive market context, not a forecast.
Across HyperPotion
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