better grade wood and blueing
its a model code. like a was the original. this one has a longer bullet and different twist to the bullet.
Mossberg
Moss Mossberg's birth name is Richard Mossberg.
You will have to contact Mossberg
at the mossberg firearm factory.
Mossberg 500AB
If it is a Mossberg, it was made by Mossberg. They did make guns for a number of "store brands".
You will have to call Mossberg
The westernfield model 850 was made by mossberg for Montgomery wards.The mossberg model number was mossberg model 353.I would start with mossberg and go from there.
mossberg is beter than Remington
Mossberg has a web site.