On the back of your card

Match the last three digits: 574.

What it is
Flagship Collection companion cards, Series One (CTB-/CTC- prefix)
Confirmed by
Two independent sources

We don’t have the card list for this code yet. See the official Topps checklist.

Search eBay for 2025 Topps Series 1 Flagship Collection companion cards, Series One

Where this code comes from

TCDB gives two possible codes (#CMP106574 or #CMP106575). Card-back photos on four eBay listings settle it (2026-10-04): Series One companions read CMP106574. Series Two companions carry CMP113573 (see 2025-topps-series-2.json).

  • tcdb.com: “Card numbers have a "CTB-" or "CTC-" prefix, and cards have production code #CMP106574 or #CMP106575 printed on the lower back.”
  • ebay.com: “Listing title: "2025 Topps Series 1 Flagship Collection Companion Card Coby Mayo RC #CTC-10". Card-back photo text: "SERIES ONE" ... "CODE#CMP106574"”
  • ebay.com: “Listing title: "2025 Topps #CTC-10 Coby Mayo Flagship Collection Companion Cards". Card-back photo text: "SERIES ONE" ... "CODE#CMP106574"”

Other codes in 2025 Topps Series 1