Crosman Old 22 cal C02 pistol

Found a couple old C02 pistols in my fiance's garage. Wondering if anyone out there recognizes this one.

I was able to open it up and WOW is it beyond filthy inside. The plastic grips are there but show signs of melting. It's very possible that this was saved from a house fire which would explain the soot like dirt inside. It seriously needs a full disassembly and all the parts soaked in a cleaning solution. This is not my forte so not sure how I would proceed. I was able to get it working, mechanically. I even found 2 wadcutter pellets stuck in the barrel.
I have no intention of trying to load a co2 cartridge at this time but eventually, I would like to see if I can get it shooting.

Curious to know what anyone can tell me about this pistol!!

Thanks everyone!!

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