Ferro, Type-A, #P-2094 is an early model and the "tell" is the exhaust.
These motors have more style than the rest, in my opinion, except for the Featherweight or maybe the early Watermans.
One of the nice things about Ferro is that the magnetos seem to always be hot.
There was a battery ignition model.
Example #57819 is astonishingly original.
Ferros were made 1914 - 1917.