Value of ANY gun is based on make, model, and condition. You gave us one of the 3 things we need. There were several models of revolver made by Harrington & Richardson over a great many years. Values could range from $10 to $400.
200 USD
25-125
25-130 USD or so
Best left to a gunsmith.
H&R makes a 22lr 9 shot revolver, Model 904
Depending on heavily on condition, anywhere from $75-$225 roughly.
I own one and they are worth around a 100 dollars
Depending on condition 25-150 USD
50-125
Winchester magnum rimfire
50-90 yrs
The H&R Model 622, a .22 caliber revolver, typically has a value ranging from $150 to $300, depending on its condition, age, and market demand. Factors such as original packaging, included accessories, and overall finish can also affect its worth. For an accurate appraisal, it's best to consult recent sales data or a firearms expert.