I have some pics of different versions but data may be wrong:
3 prototypes:
#1-it looks like an aircraft fusoleage, 2-seater, covered wheels in 1931
#2-single central light, single seater, cycle wings in 1932
#3-'dreirard tandemsitzer', 2-seater, covered wheels in 1934
The "production" model and the last one, called Type G.