I got a good deal on a Type 9 Stanley 5 1/2C with a damaged frog – the upper portion (including the lateral adjuster) is broken off. It is usable, but I wouldn't mind replacing the frog. That being said, Type 9 frogs seem to be pricey (as in triple what I paid for it) – are there any other planes with frogs compatible? This is the 2 1/4" frog, not the later 2 3/8" frog.