Actually they didn't make firearms, they had companies like Iver Johnson and Springfield make the gunes with their names on them. The model number will normally be a long series of numbers with a decimal point in the middle...most likely on the barrel.
Montgomery Ward and Sears made tons of firearms back in the day. You have a model number?
One board I saw after doing a Google search for Montgomery Ward Hawthorne 110 said it is a 20 gauge worth around $100. Gunsamerica has one that sold for $40 (another 20 gauge).
The few 12 gauges I've seen have been worth about $10 more. One sold on one of the auction sites for $60.
Is that an SB110B? If so, looks to be a Savage (should say Vulcan on it somewhere).
Hawthorn 110 Unknown S shot SG