Wards did not make rifles, they only sold them under their brand. 93M-491A is actually a Mossberg 46B.
The 46B was made from 1938 to 1949. This was prior to serial numbers being required on guns and it is not possible to find the exact date of manufacture.
A Wards Western Field Model 41 is a 22-caliber rifle. It was actually manufactured by Mossberg, but intended for Wards. Manufacturing took place primarily from 1935 to 1939.
Savage Fire Arms Company for Montgomery Wards
The Western Field model 550C was manufactured by Mossberg for Montgomery Wards.
That gun is a Savage model 315
Nobel Arms
I owned a 1967 Western Field Tent trailer and the one I owned was manufactured by Ajax Mfg or Welding in Iowa. Good luck in your seatch.
About half a dozen companies made shotguns for Montgomery Wards through most of the 20th century.
The model number of your Wards Western Field.
I have a Wards Western Field EJN-750 in .243, built on a Sako L57 action, number 3091. I purchased it new at the Montgomery Wards in Albany, NY in 1960. I believe it was manufactured in 1959 or 1960, but been unable to identify who manufactured it for Wards. There was another EJN-750 in .306 on the sale table, but I couldn't afford another $68 for it!
The Wards Western Field Model 81-SB508A was produced in the late 1950s. Specifically, it was manufactured around 1958 to 1963. This model is a variant of the Stevens Model 58, often sold by Montgomery Ward under their Western Field brand.
The Wards Western Field 22 bolt action model 40 was manufactured by Mossberg. It was sold under the Western Field brand, which was a private label used by the Montgomery Ward department store for various firearms and sporting goods. The model is known for its simple design and reliability, typical of Mossberg's production.
I would guess it was made by Stevens.