You need to do two things to help people help you. One, a clear photgraph of the base markings. I find it is best to take them from a shallow angle so that the pattern or thickness of the glass does not affect what you see. The shallow angle usually gives you a clear result darker than its surrounds. Second, if the writing is very clear - and only if it is very clear you should write down what is on the base. Often the writing is somewhat unclrear and it needs someone used to it to interpret it well. I have attached two photos of the same signature to illustrate the effectivness of the shallow angle photo technique.