Year of manufacture

[FORREST LEIGH]

I have a 12 ga. Riverside Arms, double barreled Coach Shotgun. The only info on the gun is: Riverside Arms, Chicopee Falls, Mass., USA, Patented April 20, 1915. NO SERIAL NO. 18" Barrel.

Question is when was this shotgun made, and was it made with an 18" barrel?

 

[oletymer]

It was made by Stevens, but without a serial number it is almost impossible to tell when it was manufactured. I don't know if the guns were made with short barrels. My guess is no.