Hey thanks for the information about it! The last thing I ever want to see is any more Baldwins being scraped. Here's a few ideas for you. The first thing I'd do is let as many railway museums around the area know about it as you can reach. Most museum's are set up as a charitible 501 c3 educational organization, and a donation of equipment can be fully deductible, even partially/fully tax credible. This would be a major incentive for anyone who wants to get rid of something to donate it instead of selling it. Museums are very good at finding way's of moving something that has been given to them out of their prisons. Even if they have to run a shoe-fly track and jump it on the rails with rerailing frogs, they'll find some way to get it out. If a historical group gets one, I'm quite confident it will be safe.
Please impress upon the current own that this is an important piece of equipment, and a rare example of the ever deminising number of surviving Baldwin locomotives. Offer to them that the locomotive could be made into a lasting monument to the previous owner, being renamed for that person and then given to one of those groups who are interested in it's preservation. If all else fails, a locomotive would make one hell of an all-in-over-the-top bet!
Good luck at the game!