Everything from A to Z and 0 to 9! Includes an ampersand (&), dash (–), multiplication (×)and subtraction(-) symbols! Interestingly, the number set gives separate characters for 6 and 9 which usually share the same punch but turned upside down. A total of 43 characters across 3 punches can be accessed by pushing the wheels in either direction. Letters are split between the first two punches while the numbers occupy the third.
Uncleaned as found in its original wooden case which also reads "This set belongs to Corroson and Anodizing Research Rec'd Nov. 8 1963." Fine and complete in used condition with some characters more worn than others. Each is stamped NUMBERALL HUGUENOT PARK S.I. N.Y. PATENTS 1289539 1827260 MADE IN USA. A truly complete set and a handy to have around if space is a concern.
More information on Powers' 1918 patent can be found here while the 1931 can be found here here via Google Patents.
