I say don't do it, you're barely half-way through puberty, for gosh sakes, what do you know about the hazards associated with fooling around with toxic chemicals like this? Don't do this just for the attention, kid, that would be really stupid. You're not proving anything to anybody, everybody already knows environmental sulfur will rapidly tone silver, you're not being full of any news, there. Santa Claus or whomever gifted you a chemistry set, learn how to practice safe chemistry with it, don't go off like this. If anything, you're being cute. At the other end, this isn't safe. There are collectors here who have spent their livings in chemistry, heed what they're trying to tell you. Get a Red Book, learn how to collect coins, not how to thoroughly mess them up. That's what you do with Grandpa's collection, you don't make a crackpot science project out of it.
I was going to use junk silver such as a few damaged 64' dimes that look like someone took a screwdriver to it. And also it was not a set. It was just a bag of sulpher.
