Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

Welcome Jeff.
That must be the bargain of the century!!
Some people have all the luck.
To run the 5A on steam will take a serious boiler, not something you find everyday, you will get an idea of how much volume is required by running on air, most small workshop compressors will barely keep up.

Oh, and I will give you $50 for it