Aside from the '72 serial number on the neck plate too.
I'm surprised to see such a low serial number on a 3-bolt plate - most are 500K & up, IME. I know there were some early bullet truss rod / micro-tilt builds documented, but were the early 3-bolt / micro-tilt plates just stamped in some pre-determined order as opposed to "pulled from a bin" as is always related? I'm also a little surprised at a black pick-guard that early on, but that I'm less sure of. I had a '73 P with a black guard. ...curious. ...beautiful condition, in any case.