Not purchased, but Free. Picked up an OLD Athearn Rio Grande SD-7, #5305. Old in that it has the metal side frames on it!! Not the plastic ones one later runs. Semi special to me, in that I was given the Fuel marker off of the original unit, by a friend. Either Christmas, or Birthday one year! Gotta change couplers next. Would like to try and improve details on it for entry into the new Tier 2 monthly contests.