Collecting old hardware and identifying it with old catalogs is tedious work. Yale & Towne was one of the premier manufacturers of fine architectural hardware at the turn of the century. The levers are good examples of the work that Linus Yale was providing his clients back when quality was still important to the industry at large. Wilmette Hardware produces several versions of this fine hardware in a multitude of fine finishes. If you enjoy old hardware be sure to search out these catalogs (we have a vast collection at our shop in Wilmette).