#30 "Yankee" Spiral Ratchet Screwdriver made by North Brothers Mfg. at its factory on American and Lehigh Streets. Ratchet function works despite the rust. The company operated independently from 1878 to 1946 before being acquired by Stanley Tools. In addition to its well-known "Yankee" screwdrivers, North Brothers produced diverse line of products which included ice cream freezers, ice shaving and crushing tools, kitchen appliances and much else.
A cool piece of Philadelphia industrial history!