— Hold· thin volume
PSA pop · this parallel
13
Card # 307B⇄ 307ADivin' Ivan
GPK Price Guide Value iGPK Price Guide Value is a recency-weighted market value from REAL sales of this exact card+grade (recent comps count most, outliers stripped) — steadier and harder to game than a single 'last sale', which can be one lucky auction or a shill bid. When a card has few or no recent comps, we estimate transparently from its own older sales, its other grades, and comparable cards (same subject/set/rarity tier), factoring subject trend and scarcity — and we LABEL it as an estimate until real sales arrive.
$61
PSA 10 · highest-graded comp
🟢 lowest on eBay: $275.81 all-in
🛒 1 listing on eBay now PSA 10 SLAB
RAW (UNGRADED) — NOT A GRADED VALUE
$2
12 raw sales used for this value view raw sales →
● real comps ● est. — own older sales ● est. — never sold ● unsold
Price history · PSA 10
On-the-record sales go back as far as PSA reports them — late 2017 for GPK — plus eBay-tracked and raw sales as they land.
DatePriceGradeCertType
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🗑️ The Garbologist says…

Cooling Off
The Garbologist has been digging through this one's trash.
  • 7 recorded sales · 0 in the last year · trades only a few times a year · moderate-confidence sample.
  • Following the trash: $53 → $44 → $33 → $35 → $40 — a steady drift lower.
  • Median moved -42% across the window ($65 → $37).
  • Heads up: the last recorded sale ($40 on 2025-06-29) landed 34% below our current value — weigh it as a single data point.
  • Census check: PSA has graded 38 of this card, and only 34.2% come back a 10 — gems fairly readily.
  • Net-net, the heat is coming off — recent sales are softening. Could be a breather, could be a top; the trash doesn't say which.

Automated analysis generated from this card’s real recorded sales and PSA population data — no opinions, no predictions guaranteed. Entertainment and research only, not financial advice.

Walter Sport — across every card

Subject page →
Every Walter Sport card we track — how the character is moving, not just this one grade.

🧬 Should I slab it?

SAVE YOUR MONEY

Only a 34% gem rate on this card's own PSA pop - graded pop is self-selected (best copies get submitted), so a random raw likely grades lower. Expected ~$29 before the $80 PSA fee (fee only - excludes shipping & insurance), ~$-51 after - near or below a raw copy ($2 from 12 raw sales). Not worth grading unless you are confident it is a 10.

Gem (PSA 10) rate
34%
this card · 38 graded
PSA 10 value
$61
if you hit the ten
Grading cost
$80
PSA Regular tier
Expected after grade
$-51
vs raw $2 from 12 raw sales

Probability-weighted across grades using PSA population (this card) as a proxy for cut & print quality, minus the grading fee. A guide, not a guarantee — centering and eye-appeal on your specific copy decide the grade.

GPK Price Guide
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