First, it says CTG (abbreviation for CARTRIDGE after the .32 caliber designation), not OTG.
Second, if it's chrome, it was refinished by some bumper shop years ago. If it's the factory finish, it is nickel. Can you post pics?

A timing issue like you describe could be a weak spring, worn parts or just a gun full of old, hardened grease.

Some of the parts are very specific and hard to find while others were shared between model changes and used for several decades.
If it really is as rough as you say it is, it has zero collector value and zero shooter value. It might just be a sentimental paper weight.

__________________
Chris
SWCA #2243 SWHF #292