Mike Colabucci is one of the most obscure drivers to get more than one diecast made. He only ever attempted 6 Truck races, and only made 3 of them. The #15 was only used for one of them. So was the 13, but at least it was also the number he used for all three DNQs.
With his diecast production rate, I almost wonder if the #1 he used in his second start was also made and I just don't have it.