Adding machine manufactured by the Monroe Calculating Machine Company of New York. Since I don't know how to operate this type of contraption, I couldn't tell you if it works or not. Everything seems to be a in place and there's a plate that says it once belonged to Storey County. Please see photos for more detail and condition. Date: 1950's Country (if not USA): State: New York City: New York City Provenance:Date: 1950'sCountry (if not USA): State: New YorkCity: New York CityProvenance: The Historic V & T Railroad Depot Stockpile of Pierce Powell's Western Memorabilia