This is "Hammerhead", but not like in the shark.

The locomotive on the front of this post card, Lehigh Valley No. 211, was originally built by Alco for the Pennsylvania Railroad in December 1953 and was delivered as PRR 8445. It is unique in that it has a raised short hood used to house the dynamic brakes and a steam generator for heating passenger cars. For obvious reasons it soon got the nickname

“Hammerhead.” It is the only survivor of a group of five RS-3s built with a high short hood for PRR and Western Maryland Railway, and one of only a handful of surviving Conrail rebuilds where the Alco prime mover was replaced with an EMD. The information above was taken from this website: https://rgvrrm.org/about/railroad/lv211/#:~:text=Originally%20built%20for%20Pennsylvania%20Railroad%20in%201953%2C%20the,hood%20gave%20Lehigh%20Valley%20211%20its%20%22Hammerhead%22%20nickname. This website, one of my favourite websites about railroads and railroad related information is the source of the details that follow below: https://www.american-rails.com/lv.html The Lehigh Valley Railroad was another of the many Northeastern carriers built to move anthracite coal from eastern Pennsylvania. The direct predecessor of the Lehigh Valley was the Delaware, Lehigh, Schuylkill & Susquehanna Railroad (DLS&S) incorporated on September 20, 1847. Unfortunately, the DLS&S was having difficulty raising capital. Its fortunes finally turned when Asa Packer breathed new life into the operation. Using his financial success, and with the help of investors, he acquired the DLS&S charter and renamed it as the Lehigh Valley Railroad (LV) in 1853. It is unlikely the Lehigh Valley could have survived into the modern era. The LV competed against several carriers in its territory, notably the Delaware, Lackawanna & Western and Erie, both of whom also reached Buffalo, while the latter continued on to Chicago. One can reasonably argue that its long decline began with the stock market's collapse in October of 1929. The Lehigh Valley Railroad posted its last profits during the 1950s. The LV would, sadly, show a profit for the last time in 1956 and paid its final dividend in 1957, The depression not only weakened the railroad financially but decreasing anthracite demand further hurt its bottom line. In 1928 the PRR began acquiring LV stock and continued to do so throughout the years in an increasingly futile attempt to maintain its investment within the declining company. By April of 1962 it, incredibly, controlled 90% of the road. As much as the railroad tried it was unable to reverse its declining fortunes. Its last hope for survival occurred when the PRR and New York Central created the ill-fated Penn Central Transportation Company in 1968. As Penn Central literally fell apart from its first day of service it came as no surprise that just two years later, in 1970, it declared bankruptcy. It was one of the numerous bankrupts rolled into Conrail whereupon its routes were considered superfluous.