Kessler Arms Corporation
Parts for these shotguns are hard to find. EAA Corp carries parts for Baikal shotguns. A good gunsmith might also be able to help make some parts.
You could try Gun Parts Corporation.
No.
You can find parts for many westernfield shotguns at Numrich gun parts. WWW.e-gunparts.com
The Sears 200 series = Winchester 1200. Parts should be available from e-gunparts.com if you can't find them locally.
You'll probably have to find a gunsmith who can make your parts. Shotguns marked Baker Gun Co were made in Belgium or by Crescent Fire Arms, Meriden, CT, for H & D Folsom in the early 20th Century.
Try http://www.canadiangunnutz.com/
It was a corporation, so it was owned by the stockholders, and manufactured guns in Silver Creek, New York.
Depending on condition, about $85-90. These were in production only a short time, and there is not a high demand for bolt action shotguns.
Sears 200 series = Winchester 1200. Parts should be available from e-gunparts.com if you can't find them locally.
My cross reference list indicates that this is a Savage 59. If your local gunsmith can't find the parts, you can check with www.e-gunparts.com