PENNSYLVANIA. PHILADELPHIA. 6% Income Bond Gold of $500. orange, black. No 176. Folds. Vignette of a loco, also an eagle. 43-mile line Lewistown, PA to Sunbury PA (50 miles). Completed in 1871 and immediately leased by the Pennsylvania RR. The line was noteworthy as proving ground for new railroad technology, such as the "X"-shapedrailroad crossing signs in 1917 and Pulse Code Cab Signaling technology in 1925. First time in our auctions.