Dankers
Models and s/n	Y	M	D	Remarks	Ref.
Portable
Models VK, K and UK
up to 700	1935			3 different versions at different prices, upgrade options available, particulary sold as "Juwel"	7,4
1900	1936			Patents sold and machine finally renamed to "Juwel", Juwel 1 identical to UK with improvements, Model 2 identical to VK and Model 3 identical to Model 2 with improvements	7,4
4700	1937				7
8800	1938				7
12500	1939				7,4
15000	1940				7