Professional appraiser
try e-gunparts.com
Single shot? Rolling block?
I have a Jim brown guranteed single shot belonged to my great grandad was told it was probely a Stevens.But cannot find any info on them
50-100
Old gun catalogs, auction sites, gun shop, gun show
On line auctions.
Old FIE catalogs
Blue Book of Gun Values
1920
Blue Book of Gun Values
Library reference section.
Single shot, 24"barrel, value from 50-150 depending on condition.