As Bruce mentioned, the plaque says Ahaigh York. (Could be York USA or York England) Looks like a real working engine, heavily built, similar to Bishoff. The oilers’ style are not German, English, or American; just unique, but to me is not worth more than $2500 including the 20% commission & tax. Someone got a very good machine though
If you really want that engine you should give the buyer a call.
His name is John Rozevink. He is a prolific antique engine collector, trader, dealer. He can be reached at 419-789-1159
Gil