That was a Model marking of Forehand (& Wadsworth) Arms Co.
If so,
The set could be from either a 'New Model Hammer gun' or a 'New Model Hammerless', I'm not all that familiar with the difference in the bbl sets. Probably the Doll's Head is different but that's just a guess.
The shotgun frame would be marked 'Forehand Arms Co' , their last name iteration. The change to Forehand Arms Co from Forehand & Wadsworth Arms Co coming in 1890.
Forehand Arms started making both in the 1890/1892 time period and discontinued them both in 1902
For a Hammer Gun, the ser# would likely be in the mid 1890's production (my guess). They made 10,000 of them
For a Hammerless gun, the ser# likely right near the end of their production of only around 3300 guns.
Just my guesses, especially the mfg dates.
