I was referring to System 7.1.x in general.
System 7.1.2 was originally released as a quick port to PPC from the 6100/7100/8100 machines. Its likely 7.1.2P was a intern build patched to support IDE in the Q/P630 machines. A Quadra/Performa 630 series with 7.1.2P from the factory is likely very rare as most came with System 7.5, which was released two months after the machine came out. The Performa 630 Series restore CD that I have here is dated 1994 and has 7.5 on it.
The System 7.1P series is just 7.1 with some Performa specific extensions like At Ease and the desktop background control panels and such. Anyone have a complete list? I don't have a Performa 600 restore CD to check and I liked having the option for decent desktop backgrounds in 7.1.