Material: nickel plated steel
Manufacturer: 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.
Another ad indicated the hook was US made.
1929 shown in Butler Brothers (New York) wholesale catalog for 39¢/dozen (wholesale)