I'm sure those more knowledgeable than me will come along, but to me that looks like a Gillette Slim Adjustable. Maybe an "Aristocrat" because it's gold? I don't know what years they did that.
If that were mine, and was my dad's (he died when I was 17), I'd either put it somewhere special or replate it and use it forever. It might also benefit from a serious clean and buff.