Stanley engine parts are presently for sale on eBay. Use "Stanley Steamer" for the search word. The engine blocks'slide valve faces are deeply pitted from year of sitting full of water. Good luck bidding.

The rust pitted 20 hp condensing cylinder casting sold for $650. The two piston rods sold for $161 and the two connecting rods sold for $293. About 10 years ago I was buying complete 20 hp condensing engines for $650 each. Looks like Stanley steam cars have been a good investment for us. As a well know collector once said, "You didn't pay too much for your Stanley, you just bought it too soon."