An Iver Johnson 'Hercules' model will have the I/J mfg'r address on the gun frame or barrels depending on the era made.
There is some info that I/J made a run of Hercules guns for Montgomery Wards in the 1930's. These are reportedly marked with 'Western Field' or Western Field Model 53' on the frame.
I don't know but I doubt these M/Ward guns would also have the Iver Johnson name on them.
Heavy, robust guns in 12 gauge especially. Color case hardened frames AFAIK
. The one I had was and was a nice looking job.
The small gauges bring some serious money if in original condition.
Seems like other gun company(s) of the early 20th century used the Hercules name also on some 'hardware store' brand guns.
Forester's list shows Stevens. I was thinking that Crescent may have used it also but don't see it on a list of their models.