Michael Porter Jr.
Official Factory Checklist Reference: #31
Shop Live Auctions on eBay →Catalog Parallel Variants Market Estimates
Base
Base
$0.99
Downtown
Insert
No Comps
Sky Write Signatures
Autograph
No Comps
Market Value Trends
Historical lookback tracking daily baseline value averages across all raw and graded transactions
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Historic Real-Time Market Comps Log(Optimized: showing 10 most recent transactions)
2025 Topps Michael Porter Jr.
Settled on: 2026-06-01
$3.05
Raw
2025 Topps Michael Porter Jr.
Settled on: 2026-06-01
$22.49
Raw
2025 Topps Michael Porter Jr.
Settled on: 2026-06-01
$0.99
Raw
2025 Topps Michael Porter Jr.
Settled on: 2026-06-01
$1.85
Raw
2025 Topps Michael Porter Jr.
Settled on: 2026-06-01
$99.99
Raw
2025 Topps Michael Porter Jr.
Settled on: 2026-06-01
$1.33
Raw
2025 Topps Michael Porter Jr.
Settled on: 2026-06-01
$11.99
Raw
2025 Topps Michael Porter Jr.
Settled on: 2026-06-01
$9.21
Raw
2025 Topps Michael Porter Jr.
Settled on: 2026-06-01
$65.00
Raw
2025 Topps Michael Porter Jr.
Settled on: 2026-06-01
$1.25
Raw