A new Differential Pinion Shaft that I got at an auction of vintage car parts.

I don't know if this is OEM or aftermarket but it is, or is equivalent to, Mopar part no. 663480 and is for use on:
car auto automobile automotive classic antique 1937 1938 1939 1940 1941 1942 1946 1947 1948 37 38 39 40 41 42 46 47 48