950 Electronic Sound of Steam in 50' Box Car -No. 957 Unloading Mail Car Set -No. 920 Unloading Box Car Set -No. Pictured above is the first pair of Triple Dome Tankers from the 1972-73 catalog. Unique this first year are the paint jobs on both cars.
Later models feature different paint schemes for each, see images below.
Additionally, later models drop the ladder at the center dome. Riding on triple trucks and boasting triple domes, this was the longest tank car offered in the TYCO line. It is first found in the 1972-73 catalog and remains available into the 1980s. The car was produced for many years and is certainly not the most rare among TYCO 62' tank cars, but it does seem fetch the highest bids on eBay when it appears of all examples of this model. In addition to this car, TYCO also offered the 40' single dome tank car and the 50' box car in Coca-Cola.