If this is the 25¢ chip then I have both also. This one is $25 both sides.
The guy that I got the two sided one from gave me this one so I could see what the other one was supposed to be.
Anyway, your $25/25¢ makes 12 for sure.
I just checked my FL file, I've had the 25¢/25¢ real one since 1995.