This 50’ box car with single sliding door is painted red with black roof and ends, ladders and details. It bears the early black and white Circle-Cross herald with lettering in both white and black. It was built in October 1954, services in June 1958 and runs on roller bearing trucks. This car was a one-of-a-kind test bed for a new “home-built” class of cars. The success of this experiment led to the construction of 100 new Bx-76 class cars in 1958-1959. Along with the new cushioning came a brilliant Indian Red paint scheme with an oversized 61” version of the older style “Circle Cross” herald with the black box background, used only on this Bx-77 car. The remainder of cushion underframe equipped cars received the newer “Circle Cross” herald after 1959.