Question.... where did you find this?
482 was missing hers as long as I remember from my beginnings in Chama. We always assumed the D&RGW removed it, and it was object of wonder as to why they they would do so. When the trade was made to the D&S for the 497, one of the questions the D&S had was "where's the throttle bracket?" We had no idea, assuming it came to the C&TS missing. So, 483 had to give up hers.
So now here's a pic of an apparent "spare"...
??????