Well, besides possibly finding a 1918/17-D Nickel, as posted in my other thread, but I also found another Buffalo nickel that's from the 30s (can't verify the last digit, but it might be a 1934), But it has a very clear S mint mark on the back, that is sideways... so you have the "Five Cents" and the s is running horizontally, instead of vertically like I've seen on my other nickels.... unfortunately I cannot get a picture right now, but can anyone verify if these nickels are known?
I'll have to look at it again tonight... it's over at my fiancee's house and I have to goto work, but I'll get pictures if I do verify the mintmark is sideways again....