Callie Graphics, in Magdalena, NM does my Cub bears and N- numbers, both real and model. She did two spectacular Colbert Eagles for my Decathlon. And she does complex model train stuff, all for very reasonable prices.
It is possible that Callie already has the artwork to produce any of these - her specialty is model airplanes, but all she does is scale it up.
Here is the bear she did for me - $25, including postage. It is like the cost of living in New Mexico is half!
This is way, way off topic, but I needed a chrome wrapper for the nose of a model. Very special font, and delicate dimensions - she worked with me, and for $22 I got enough for me and two friends.
The model is just an example of how crazy a hobby can get - mine is pre-WWII sand cast models, and I had a roof and the trucks from that era. Wit the aid of two foundries and a small company called Atlas, I was able to create this in bronze. It is not done, but for me the proof of concept is often the satisfaction point.