The P3n/P30n was the defining body in the P-series cameras with a total production time of 1996-1997. I'd suggest all review material be consolidated in that thread rather than having it repeated here.
The only functional differences in the P-t's was the diagonal split image finder and a plastic film door.
The P-bodies served Pentax well for nearly a decade as a consumer-level, non-auto focus
SLR with full access to all the lenses and accessories of the brand.
I've owned five different P-bodies and never had any trouble with any of them.
H2
( See next: At one time I used to know how to use tape to modify the DNX code on the film roll.)