There's really no "10 cent" answer on knowing original vs. repro.....obviously if the lenses say REPRODUCTION or say that they are an "officially licensed product of "X" oil company", or have a modern production date somewhere on the face, they are without a doubt reproductions. It takes time to learn what to look for, and if you don't have any globe knowledge you should really get out to shows and auctions and meet people who do know to share some knowledge.
Darin


Darin Sheffer
Always looking for Mobil and Marathon items I don't already have!