Oliver, 1900, N°3, Usa

The Oliver Typewriter Company was an American typewriter manufacturer, founded by Thomas Oliver in 1895.
Although production in the USA ended in 1928, the British Oliver Typewriter Mfg Co would continue production of the downstroke until after World War II.

The Oliver Typewriter was one of the first "visible print" typewriters, meaning text was visible to the typist as it was entered.

Oliver typewriters were marketed heavily for home use. Oliver produced more than one million machines between 1895 and 1928 and licensed its designs to several international firms.
In 1903, the A. Greger company of Vienna acquired the rights to produce the Oliver 3 in Austria, using the Courier brandname.  And when the Oliver company moved on to later models, The “Courier” continued production of the model based on the Oliver 3, but with some modifications and improvements.
Production stopped in 1919, but apparently sales continued until 1927.

The Oliver 3 was produced between 1900 and March 1907, while at the same time an identical Oliver 4 was produced with foreign keyboards for the export market.
The Olive-green color is typical for the Oliver typewriter, although the earliest models (and some later export models) were produced with a nickel-plated frame.