Fortuna
Models and s/n	Y	M	D	Remarks	Ref.
Stolzenberg-Fortuna
	starting 1922			The machine was introduced as Stolzenberg-Fortuna	4,13
Model 2, 3 and 4
	starting 1928			When the contract with the distributor Stolzenberg was cancelled, the machine was renamed Fortuna	4,13
"Oliver"
50000-51000	1931			British "Stolzenberg-Fortuna" was named "Oliver", four rows keyboard	7
52000	1932				7
55300	1933				7
over 55300	1934				7