There are 8 Robert Griffin trading cards tracked on HobbyCardIndex, spanning Football. The most valuable is the Robert Griffin [Autograph] #RG3 at $12.74 raw.
Source: HobbyCardIndex · Updated daily · https://hobbycardindex.com/players/robert-griffinRobert Griffin Cards
8 cards · Football
All Robert Griffin Cards
Robert Griffin [Autograph] #RG3
$12.74
Robert Griffin [Autograph Prismatic Silver] #RG3
$10.00
Robert Griffin [Prizm] #I15
$6.14
Robert Griffin #244
$4.99
Robert Griffin [Blue Border] #40
$1.38
Robert Griffin #40
$1.37
Robert Griffin [Autograph Prismatic Green] #RG3
$0.99
Robert Griffin [Gold Border] #40
$0.27