Somewhere between 5$ and $100,000. Try being as specific as possible for a narrower price range.
$25-$50, depending on condition of the box, paperwork, etc.
No more than 50 USD if new in the box.
100-1000 USD depending on EXACTLY what you have and its condition, accessories, box, papers.
I've seen prices on them from $7000.00 to $10,000.00 new in the box.
what is the value of a harrington and richardson 1895 revolver
In general, RG firearms were low cost, low quality. Value may be $25- $50 for a new-in-box specimen.
100-3000 USD depending on EXACTLY what you have, configuration, condition, box, accessories, etc..
100-500 USD depending on condition, box, papers, accessories, etc..
25-300 usd
100-500 USD or so
Impossible to answer without a detailed description including the model, caliber, box, papers, accessories, etc..
100-1000 depending on exactly what you have, condition, box, accessories, papers, etc..