Post Reply - Serial Numbers to Look for and Report

   I don't know much about it myself. 
Serial number: 4,427,465

Barrel date: Underwood 9-43 with NPM punch proof mark

Rear sight: early flip type marked s on left N-A on right, 

Barrel band is early narrow UN with UN marked swivel, front sight still retains all original staking.

Stock is an IBM highwood , 2 rivet inland handguard 

Slide, bolt,  and TH are all NPM. 

I have been a collector for almost 30 years and can tell it's the original rear sight, barrel,  and band to the receiver.  The rest ....idk...I bought it because of how high the serial number was and the seemingly original to the receiver, yet out of place early parts on it. And it was a good price too.