What crank is this?

Does anybody remember if this crank was part of an assembly?
Crank, rods, pistons as a package?
I don’t remember ever seeing a rotating assembly package.

This just reminds me of a 340 I purchased once from a well known guy in my area. Super cool, very honest family. He told me the engine had a Purple Hyd 292/.508 cam in it. When I disassembled the engine, the cam numbers stamped on it were a number off.