Limited production during the cold war for use on almost any railroad in the world, in case of a ground war. Couplers could be changed out, it had vacuum and air brakes with wheels that could slid on the axle for the different rail gauge. Alco and Emd made a total of 96.
( MRS1 )
I don’t know of any model production runs of these, but these MRS-1’s made it into private and industrial use, where they would make an interesting addition to a layout. The sign that appears above shows that the unit had been used by the Army Ammunition Plant in Radford, Virginia, where it would have interchanged with the N&W. One of these units was used for a couple years at the scrapyard in Roanoke, Virginia located off of Wonju Street. I think that there was one stored up at Cass, WV for awhile, too.
I doubt one will everbe produced as it is too limited and no major roads ever had one. I saw one years ago in a junk yard in East chicagp Indiana before being scrapped.