Valve Covers

[onequick555]

First of all I would like to say Hi. I am new to the site, but my brother actually posted pictures of our B/M 'equipped' Vette. It was the Red with black stripe 71'. Well anyway, I have a question with the valve covers. First of all when my father purchased the valve covers for his car he spent a lot of money for them at a local swap meet, yet now they are on ebay constantly. How do I know if I have an original set, or a knock off set? I heard that they should be chrome? yet i never saw a chrome set anywhere. Can anyone help me out? I can show pictures of mine if it would help.