A new OEM Delco-Remy Capacitor (condensor) that I got at an auction of vintage car parts.  This is part no. 1961891.

For use in alternators on 1963-67 Buick cars with 62 amp Delcotron Alternators.

The box is rough.
 
car auto automobile automotive classic charging system 1963 1964 1965 1966 1967 63 64 65 66 67  (XK7)