I've been asked to broker the sale of a Colt 21/28 Navy Overstamp, s/n 7506. I know a lot of the collectability and thus final sales price depends on originality of parts, condition, etc. I am generally familiar with the Thompson, but am not well versed on all the particular fine details to look for and so would like to turn to the experts here for your opinions.
I have taken a number of photos, both with and without flash to try to capture as much detail as possible.
Photos can be found here: https://drive.google...LF9?usp=sharing
From what I can tell, the parts look original and proper for the gun. The oiler has a black crinkle finish, so may be a later WWII one? The drum that he's selling with it is a WWII drum as well. Obviously there are some minor condition issues (small amount of rust on the right side of the receiver, several scratches).
What else can you tell me about this gun?
Are there any other parts that seem suspect of not being original?
Anything that would drastically affect the value one way or the other?
I appreciate any feedback you may have for me!
Houston Arms & Training