Hi mas123.....welcome to TFF.
Hard to tell exactly which model of H&A Forehand revolver you have. Can you post some pictures of it.....full length, left and right sides?
Forehand & Wadsworth operated under that name from 1871 until Wadsworth's retirement in 1890. At that time it became the Forehand Arms Company until it was bought out by Hopkins & Allen in 1902. H&A continued to manufacture the Forehand revolvers using the parts they acquired from the sale until somewhere around 1910-12 (or perhaps even a little bit later).
The manufacture of Hopkins and Allen firearms ceased in 1917 when the plant was taken over by th Marlin-Rockwell Corporation for the war time production of Browning automatic rifle components.
Sooooo....to make a long story short, the name "Hopkins & Allen" on your revolver indicates that it's one of those "leftover parts" models manufactured between 1902 to 1910 or 12. Which model, however, I can't really tell from just a description.
Please list ALL
of the writing on the gun, EXACTLY
as it's written, and some pictures, please.