Im looking to buy one of these razors or possibly both. However, I dont know much about them. I have noticed that some have a silver color plating on them, and some of them are gold. Did Gillette offer both types of plating, or were some of these re-plated along the line at some point? Is there anything I should keep my eye out for when looking at these? I'll admit that these razors probably wont get a lot of use, but just owning a razor thats nearly 100 years old is appealing to me.