In reproduction catalogs from Sears @ turn of the century
If it is a fully functional (have it checked by an experienced gunsmith) gun with fluid steel barrels, back hammers or hammerless, it should bring $200+ as a shooter. If it has side hammers and twist steel barrels, it's worth $125-$150 as a mantle decoration.
1901 till1930
50-150 dollars
No published sn data that I know of; 40-100 or so
THey were made by crescent firearm company.
500.00
Unfortunately we would need a lot more information for a good answer. The two main suspects would be Remington, who made a fine quality shotgun, and Crescent, who made a utility grade shotgun. BOTH used the Peerless name. You need to take this to a competent gunsmith for an evaluation. Sorry-
35-100 USD
manufacturing turned toward internal hammers about 1870 just about the same time the transition from twist to fluid steel barrels appeared. keep in mind that side hammers still appeared on center fire shotguns using brass cased shotgun shells that first appeared about 1860. if it is a percussion cap shotgun its probably pre 1860.
Try gunmaker.ca
Theate Freres of Belgium if it is a double with outside hammers. Crescent Fire Arms if it is a hammerless double. Iver Johnson Arms & Cycle if it is a single shot.