There are three types H&A top break revolvers
1885-1899 usually marked with the 1886 patent dates (some may have more than two patent date markings but none would be later than 1899
1899-1907 Forehand models all manufactured using designs patented by either Forehand & Wadsworth or Forehand arms co.
1908-1917 Safety Police model, marked with that name and usually the patent date August 21, 1906.
Exact dates are almost impossible to ascertain- the factory was destroyed by fire about 1901, and the company closed for good in 1917. ALL H&A handguns were designed for Black Powder ammunition, and should not be fired with modern ammunition.
Have H&A 32cal with serial number z249 .How old and whats it worth.
what model, caliber. ????????
What model .38?
1912
1910
1911
1871
2006
Caliber should be on the barrel. SN's were not required until 1968
Early 1930s
Swiss 1920-1940
Impossible to answer without knowing the model and caliber.