Taurus,
Sorry about the link, I tried it when I posted and it worked. Here is some information that I have found. Your shotgun appears to be a Mossberg model 83 mfg. from 1933 to 1946 by OF Mossberg & Sons for Montgomery Wards Western Field, their Model 15A, 410 gauge. I hope this helps. Sorry again about the link.
Take care,
Stargazer (AKA Gun Nut)