I have 2 Gillette razors (one a fatboy) that I want to sell. Before I sell them, I want to find out the year of each razor, one the model/type and a reasonable selling price before advertising. Where's the best place to find information on Gillette razors. Both are from the earl to mid 1960's. I bought them from Ebay some time back but I don't have the information on them anymore. Thanks! Fritz