it.s an early 50s model...semi automatic shotgun..
The JC Higgins 583.7 bolt action shotgun was made in late 1946 of early 1947.
Made around the turn of/early part of the century.
Late 1940s- early 1950s
Savage-Stevens, early-mid 40's through 50s
Early 1960's. There will be a two upper case letter assembly date code on the barrel. http://www.histandard.info/PDF/Sears%20Shotguns.pdf
It sounds to me like you have a Early made Ithaca Baker model double barrel shotgun made in 1889-1890.As to value I would have someone with the knowledge to evaluate you gun and then he could assign a value for you.
An early model Lefever single-barrel 12-gauge shotgun with a 30-inch plain barrel can be found for sale online for $300. This is the price for one that is in excellent condition.
Unfortunately, W. Richard was a low quality shotgun that attempted to cash in on the very fine quality Westley Richards guns. No connection between the two. Made early 1900s. sold by Sears.
This would be an early H&R shotgun from 1905-1940, or thereabouts. The 36" barrel makes it more interesting.
I own an old ,early 1900 or older 12 guage hanover arms shotgun,given to me in hanover,pa.It has outside hammer triggers and a twisted steel barrel