your wards firearm is actually a mossberg model 42C that was made by mossberg for montgomery wards(Western field).The mossberg model 42C was made between the years 1938-1941.These range in price from 65-175 dollars,depending on condition and a good bore.
1938-1941. Production stopped due to WW II.
Your western Field model 93M-497A was made by the firm Mossberg.The Mossberg model 42C and your rifle are one and the same.The model 42C was made from 1938-1941 By Mossberg and Sons firearm Company.I hope that you find this info of interest.
The Model 42 was made 1935-1937. Variations 42A, L42A, 42B, 42C and 42 M were made from 1937-1950.
Mossberg
You will have to contact Mossberg
If it is a Mossberg, it was made by Mossberg. They did make guns for a number of "store brands".
Mossberg made it. It's very similar to Mossberg's model 46.
at the mossberg firearm factory.
Go here: <http://www.havlinsales.com/> Click on .22 parts & scroll down 1/4 of the page for MOSSBERG .22 SCOPE MOUNT For models 26B, 26C, 42A, 42B, 42C, 42M, 43, 44US, 46A, 46B and 46M.
Mossberg made parts only.
You will have to contact Mossberg to find out.