Congrats! Looks like a nice one. Try wiping the dirt from the front with a warm moist cloth. Just enough to remove the dirt, if you see green on your cloth your rubbing to hard and taking the patina off. Next step, rub both sides with some nose grease (gives them a nice shine) and final step zoom half way with your phone camera it is easier to get a nicely focused pic. Your into the oldies with this one, awesome!!!