About this time an anti-trust law was passed and the watch case manufacturers formed a boycott against Dueber's company.
In 1888, Dueber bought Hampden and moved both companies to a dual set of factory buildings in Canton, Ohio.
The Hampden pattern watch movements were called the Type-1, easily recognized by its distinct twin finger bridge layout.
But the case numbers seem to not have been allotted consecutively.
One case serial number that is close to yours is from 1891.
I have determined the piece is 14K gold filled, it is a 20 year guaranteed piece and it was made by the Dennison watch case company in England.
Trade Mark appears to be a sun over a moon and star.
28 boxcars of machinery left Canton, together with 21 Dueber Hampden employees to teach the Russians the craft of watchmaking.