This is the self-timer winding lever from a Spotmatic SP2.
Condition: The lever is good. The lock-nut has some surface bumping, not sure if it’s paint or anodising. Please see image for reference.
A note on Source: We’re not in the habit of stripping perfectly serviceable cameras for parts. This Spotmatic body was irreparably damaged by some deep corrosion on the chassis on the film path, which scratched any film that passed through/over it. So in this case it was deemed better to strip the usable parts and junk the chassis.