Back in February of this year, there was a thread "Balloons in freight service". Going through this thread it shows that four, not three stacks exist, one in CA, two in Silverton and one in Durango. There is mention that one of the stacks was slightly different for perhaps 481. The above picture clearly shows that one was made for 483 and her roll.
So, did another 480 ever wear this stack too? Were there more than four? With two in Silverton being the same and one in Durango for posterity (or to place on 473 if she is replicating the "Silverton" of the 50's), is the one in CA really 483's and not 478's?