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Rookie card
2018 Topps UFC Museum Collection #MA-SOM — Sean O'Malley — front
#MA-SOM
Catalogue No. 505 · Card record

Sean O'Malley

2018 Topps UFC Museum Collection · card #MA-SOM

Rookie cardKey cardAutographNumbered /99
  • FighterSean O'Malley
  • Year2018
  • ManufacturerTopps
  • Set2018 Topps UFC Museum Collection
  • Card number#MA-SOM
  • TypeCertified autograph
  • AutographYes
  • Serial numbered/99
  • Rookie statusThe card front carries an RC logo (seen on the SportsCardsPro scan). TCDB lists it without an RC flag. It is a rookie-year Museum autograph, not his base rookie card.
  • Print run/99 (serial numbered)
High confidence×1View sources & research
01

Why this card matters

A horizontal Museum Autographs card from 2018 Topps UFC Museum Collection (released November 28, 2018), with an on-card signature beside an RC-logo portrait. Cardboard Connection says the insert is numbered '/99 or less'; O'Malley's base copies are numbered /99.

02

Identification

Missing a back scan. Contribute one.

  • Card code MA-SOM
  • Base serial xx/99 printed in gold bottom right (seen on a '77/99' copy)
  • RC logo top right; MC medallion left; 'SEAN O'MALLEY' under the signature
  • Parallels: Gold /25, Ruby /8, Emerald 1/1
Often confused with
'Rookie Auto 19/25' is the base MA-SOM./25 is the Gold parallel; base copies are numbered /99.
03

Parallels

Base
—
This card
Gold
/25
High confidence
Ruby
/8
High confidence
Emerald
1/1
High confidence
04

Population & market

Population. Population figures will be taken directly from the grading companies and dated when they are. None are shown yet.

FightCardboard doesn't republish other sites' price data, and won't label an asking price as a value. What appears here instead: sales we made or watched happen, and public auction results — each tagged with its source.

Cardboard Connection — 2018 Topps UFC Museum Collection checklist and set details
Trading Card Database — Sean O'Malley 2018 cards

05

Available copies

None in the vault right now.

Tell me when one landsOffer one to us

06

Further reading

Sets

Topps Chrome UFC: 2017–2019 and the 2024 Return

Three chromium sets, then Panini took the UFC licence, then Topps came back. The run year by year, with the rookies and autographs worth knowing.

September 21, 2026
Topps Chrome UFC: 2017–2019 and the 2024 Return
Rookie cards

Sean O'Malley rookie card guide

The long version, with every card people confuse it with.
07

More Sean O'Malley

2018 Topps Chrome UFC #84 Sean O'Malley — front
2018Topps Chrome UFC #84Rookie
2018 Topps Chrome UFC #FA-SOM Sean O'Malley — front
2018Topps Chrome UFC #FA-SOMRookieAuto
2018 Topps UFC Museum Collection #39 Sean O'Malley — front
2018Topps UFC Museum Collection #39Rookie
2018 Topps UFC Museum Collection #SSAR-SOM Sean O'Malley — front
2018Topps UFC Museum Collection #SSAR-SOMAutoRelic/165
2019 Topps UFC Knockout #16 Sean O'Malley — front
2019Topps UFC Knockout #16
2019 Topps Chrome UFC #90 Sean O'Malley — front
2019Topps Chrome UFC #90
Sources & research High confidence×1

Every factual claim on this page, the evidence behind it, and an honest confidence level. Where sources disagree the disagreement is kept, not quietly resolved.

High confidence

2018 Topps UFC Museum Collection #MA-SOM — Sean O'Malley.