schimel, valuation

[hawkdriver]

I am slowly selling off shooting stuff and guns i dont use, some never used, down to my last couple for sale, had this schimel for years never shot it didnt have the nerve to put co2 in it to try,
its been dry stored for years, no corrosion i can see, but everythings a bit stiff, lots of wear and finish missing, grips are ok no cracks, rear lever works, toggle, side catch is stiff, trigger not moving but dont want to break anything, looking at selling as a project, or why, any idea of prices these go for? thanks serial number includes 54 so assume 1954? best place to sell?

the gun has cast into it P22, but looks like a capital G is stamped in front of the P22, might have a bearing on it value.