From what I can tell, the Stan Getz "Gold, Happy 50th Stan" on Inner City (a 2 LP set) is the same album as the Steeplechase releases "Live At Montmartre, Vol.1" and "Vol. 2".
I have more than 50 Getz albums. I can tell that this one is probably not one of "the best" from a critical analysis standpoint, but it is one of the Getz albums that I play most often. If you are interested, I would say that you should get it. It is not a compromised fusion album like some of his late 1970s material. It is a very enjoyable listen.
The Inner City release was a reissue of the SteepleChase recording. Not great but really ok material.