An entirely conventional lathe from the period 1895 to 1910, the 125 mm centre height Rossia shown below is the only one known. Backgeared and screwcutting, with power cross feed and a flat-topped bed, the lathe could have been manufactured in almost any European country - and the tumble reverse lever is very like those on German lathes of the period. The "balanced" handwheels (if original) and neat thrust bearing arrangement on the end of the hollow spindle would tend to put the lathe later into the suggested period, rather than earlier.
If you have a Rossia lathe the writer would be interested to hear from you.