The building is covered in nicely lettered signage, which is still quite visible, probably due to its upkeep until the late ’60s. There have been a few small adjustments to the lists of products painted between the windows since the company took up residence, but that aside, the signage appears to be largely unaltered from that of the late 1800s. “Springs, Coil, Flat, Wire Forms, Metal Stampings” fill the left panel, and the right panel reads, “Springs Tested—Heat Treated.” 

(via New Book Explores the History of Philly’s Faded Outdoor Advertisements | Arts and Culture | Philadelphia Weekly)