The 7 Most Valuable J.A. Happ Cards
The most valuable J.A. Happ card is the 2018 Topps Update Base Set J.A. Happ Gold #US66 at $1.54 as of October 14, 2026.
By Ripbin Research · Updated 2026-10-14 · prices from live market data
Shop J.A. Happ cards on eBay
Affiliate — we may earn a commissionThe 7 most valuable J.A. Happ cards in the Ripbin catalog (2018–2020) carry a combined raw market value of $7.41, topped by a $1.54 card.
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