Actually, Tomboygirl, I wasn't guessing...I was just trying to get a "rise" out of Vic, because old Gord Varney, God bless his Soul, never made an 0-4-0 with tender...and I figured Vic should know that.
I believe that Mantua engine was known as "The Shifter" , and the kit sold for US$15.95 in the mid-50's. That was quite a bit of money for that time, compared to average earnings.
Compliments of the Season & regards / Mike