Well it was made by Parker.........
But it's H.S.B.& Co. No.174 Rev-O-Noc
Rev-O-Noc is Conover spelled backwards. Apparently there was Mr.Conover at H.S.B & Co.
Hibbard Spencer Bartlett & Company started around 1855 and was a Hardware company in Chicago.
Known today as True Value Hardware
In...