Harrington and Richardson made it.
Harrington & Richardson did not make a Model 1900. Hopkins and Allen did.
Since it has a serial number, it was made after 1968. They were made at least through the 1990's, but I know of no source of serial number dating info for recent H&R guns. * Harrington & Richardson manufactured the shotgun in 1974.
Your harrington and richardson model 900 was made between the years 1962-1973.
2013
what is the value of a harrington and richardson 1895 revolver
Yes. Harrington & Richardson Arms and Cycle Works.
There is a company called Harrington and Richardson. They have made shotguns, rifles, revolvers, had military contracts for the M16 and various other weapons. They tend to be functional and basic, not high end.
10-100 USD or so
1987
1971
Sorry- not enough info to answer. The 7 shot revolvers were early guns- I have one made about 1900.