Forehand Arms was the successor company to Forehand & Wadsworth. They were in operation from 1890 to 1902. Not aware of any serial number database for them. Sorry.
1870-1890 or so
No sn data available
I think you are asking about a forehand wadsworth British Bulldog not a BB gun. As far as I know, I do not know of any Forehand Wadsworth BB guns. Please rephrase your question and re-post it.
No published sn data. @ turn of the century
No known sn data published
No published sn data
No known sn data published. Probably early 1900's
50-300 USD or so
Try the Blue Book of Gun Values
about 1883
No published sn data
No published sn data I know of.