Material: nickel plated steel
Manufacturer: Potter and Snell, Deep River, Connecticut
Distributor: Joseph L. Porter Company, Inc., New York
Sizes: US 1 to 14
Ad from Notions and Fancy Goods (periodical), 1915
1913 was when Kippenberg’s patent for the grip expired.
1929 shown in Butler Brothers (New York) wholesale catalog for 39¢/dozen (wholesale)