Probably about $150, depending on condition, condition!
Try checking out gunbroker.com. Put in the model name, search, and you just may find the value of that gun!
25-150 USD
Mossberg made it. It's very similar to Mossberg's model 46.
Try e-gunparts.com
Your Western field 22cal rifle was made for Montgomery Wards Co(Westernfield) by Mossberg and sons.The Mossberg model 346K and your rifle are one and the same.The Mossberg model 346K is worth between 55-125 dollars.These rifles were made from 1958-1968.
No published sn data.
50-150 or so
Depends on the condtion of the rifle. Collectors values on the Mossbergs are modest, and might range from $75 to $275.
Dirty, broken or worn parts.
5-125 USD or so
Your rifle was made for Montgomery Wards(western field) by Mossberg.The Mossberg model 320 is the same rifle.these single shot .22cal rifles are worth between 55-110 dollars.
50-125 or so