Where I can find a model of Santa Fe 4-8-4 3759 and what’s the price.
My guess is
Look for a 375l class (3751-3762) Santa Fe, and decal the number’s to fit. They’re in short supply, so if you find one around $300, grab it. Only BLI and Key (brass) produced this Class engine.
found about 6 4-8-4 Santa FE on ebay but none where 3759 found 3765, 3762,3753(2) 3756, & 3785 if interested follow this link
As Don Gibson stated, best bet is to buy the 3751 and re-decal the number. You can get the right decals through Microscale. The decal kit number is 87-1164. I just numbered a blank Bachmann Spectrum Heavy Mountain with this decal kit, and I also “converted” my BLI J1e Hudson to Santa Fe with the same kit. I still have enough to do several more steam locomotives. Not bad for about five bucks.
One other thought is to buy any 4-8-4 Northern type and “make it fit” so to speak. If you’re not a real detail freak, this will work. If it absolutely has to be prototypical, then BLI is your only hope-and you’l probably have to modify that model also.