2091 and 2670 at the 63rd and Malvern loop. At the time of the photo, Rt 41 using 1948 all-electric PCCs. The Rt 41 car in this shot is the lowest numbered of that group of cars.
Fr. Casey's roster of Philadelphia PCCs on Mike Szilagyi's Philadelphia Trolley Tracks indicates 2091 was sold by SEPTA in October 1994 to Gomaco Trolley Co in Iowa.
August 10 1957 was the last day for trolley service by PCCs on Rt 41.