How we verified this parallel

Back of card clearly reads 'BA-JT2' (Base Auto Jonah Tong #2). Per Cardboard Connection 2024 Leaf Trinity guide, prefix 'BA' = Base Auto Sets. The card front shows the 'Trinity' circular background pattern rendered in blue/cyan ink with large floating autograph panel. Serial '19/49' is printed in blue ink at the top-left of the autograph panel. Leaf Trinity Blue parallel of base autograph is numbered /49. References: https://www.cardboardconnection.com/2024-leaf-trinity-baseball-set-review-and-checklist

AutographNumberedRookie-eraProspect

2024 · 2024 Leaf Trinity Baseball

Jonah Tong

New York Mets

Card #: BA-JT2
Parallel: Blue Auto /49
Serial: 19/49

Estimated Value

$20

median of 10 raw sold comps · latest 2026-02-24

Live eBay sold →

Range

$7.50 – $24

Avg sold

$18

Based on

10 comps latest 2026-02-24

Recent sold comps

Request This Card in a Trade ← Back to Collection

Clear acetate-style front with floating signature panel. Serial 19/49 in blue. Back shows 'LEAF TRINITY 2024' and 'BA-JT2' identifier. Tong made MLB debut Aug 29, 2025 (5 IP, 1 ER, 6 K vs MIA) and won 2025 MiLB Pitching Prospect of the Year. This is his pre-rookie/prospect auto; his true MLB rookie cards are in 2026 Topps Series 1. Highest-value card in the batch. Sources: https://www.mlb.com/news/mets-prospect-jonah-tong-makes-mlb-debut | https://www.mlbdraftleague.com/frederick/news/jonah-tong-22-named-2025-milb-pitching-prospect-of-the-year