Riverside was a brand name used by Stevens for Montgomery Wards and other retailers. It was probably made soon after that patent date, but they still made some exposed hammer guns at least until 1940.
80 years plus or minus...
Try www.gunpartscorp.com I recently got one from them. Service was quick & fairly reasonable. Hope this helps. packrat
Numrich or one of the other online parts dealers should have one, but you will need the model number, or good photos of it, and the gauge.
== == Acme Arms Company was a tradename used by the J. Stevens Arms and Tool Company on pistols and shotguns produced for the Cornwall Hardware Co. of New York. They had a double barrel 12 ga. with external hammers. The shotgun is worth anywhere from $75 to $350 depending on the condition.
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
Known tradename used by Shapleigh Hardware. The guns were made by several different manufacturers, although your double is probably a Crescent. 1900-1930.
I believe it is 567 years old
its an old gun from sears. inexpensive back then. worth about $125 bucks.
Riverside Arms was a name used by J, Stevens Arms and Tool Co (which became part of Savage Firearms) between 1915 and 1940. There are no public records for dates of manufacture.