1890's? Royal Bar Lock
Cosmetically: excellent. Decals and paint are in terrific condition. Very little to no rust.
Mechanically: ribbon is somewhat dried out but it works!
I am not sure of serial number. Look at pictures and you can see there is a scratching around the numbers. Machine does have 78 keys and made for American market. Seems to be model before 1898 since there is no shift key.
Would benefit from light cleaning and it would be superb.