Sadly, the answer to that question is, a bank of it’s own. PNB (later Corestates) was the last to pull out of town, having been preceded by PSFS, once the oldest savings bank in the nation.
When PSFS was in it’s infancy, four similar branches were built. The branch offices are located at Broad & Ruscomb Streets, Broad & McKean Streets, 11th and Lehigh Avenue, and 15 South 52nd Street. The Broad Street offices had single vaults used for cash and safe deposit, while the east and west offices had cash storage on the banking floor with safe deposit vaults in the basement. The main office built later at 12 South 12th Street had a huge vault built on a mezzanine level, and was hailed for architectural firsts.
The vault doors seemed like crown jewels, polished slabs of steel, copper, and glass, objects weighing 15 tons and more, moving with ease at the push of one’s hand, fitting so perfectly into their architrave that a paperclip or matchstick would prevent the locking mechanism from operating.
Apologies for the slight hijack-there are some truly beautiful buildings in Philly.