Different size Motion bages??

[owners2]

original owner of my feb.71 z28 i bought had given me lots of motion parts with the car. he said he bought parts at motion but never had them do any work to his car. the valve covers he gave me are polished & say japan 739 inside & have long emblems that were cut.there is an additional long emblem that has never been installed on anything & still has the protective backing on the yellowed out 2 sided tape.i called & asked him if he recalls when he got these & he thinks about late 1971.