Primarily Petroliana Shop Talk Forums Shop Talk Petroliana Forums Online Auctions, eBay Craigslist Petroliana Texaco Sky Chief lenses

You need to look at the backs of some repop lenses along side some real ones and you'll see the difference. There is no real way of telling by looking at the fronts. A lot of repops will be marked at the bottom of the lens if they were made by reputable dealers.