Cornell Publications may have a book with sn data.
Under $100.
100 USD
I have a octagonal barrel .32 caliber Remington Patent date May 3, 1864 - What would it be worth?
Manufactured by Harrington & Richardson very near that patent date.
No such thing as 22 "caliper". 22 caliber, yes. 10-100 USD or so
about 1904
Try Cornell Publications. They have a few books on the company
It had to be manufactured between the 1912 patent date and 1915 when the company ceased operations.
Need more information. Caliber? Tip-up? Swing-out cylinder? Barrel markings and patent dates? sales@countrygunsmith.net
The Bulldog
Blue book of gun values
H&R does not have a patent dating from 1850 - either you have the wrong company or the date was misread??????????????