There was a 'Typ 51', the first of which was built in August 25, 1945 and was produced in around 1300 units until January 29, 1946. The production of the 'Typ 11' in high numbers occurs in 1946: in March the Major Ivan Hirst team starts a rhythm of 1000 per month. This 'Typ 11' remains the sole type produced until June 1949. By then, the factory was already under the direction of Heinz Nordhoff, that took charge on 1st January 1948.
The Export model was introduced in July 1949 and, by that time, the designations go as follows: Typ 11A ( Standard ); Typ 11B ( Standard r.h.d. ); Typ 11C ( Export - sometimes also called Deluxe ); Typ 11D ( Export r.h.d. ); Typ 14A ( Cabriolet Hebmüller ); Typ 15A ( Cabriolet Karmann ) and Typ 15B ( Cabriolet Karmann r.h.d. ).
About chris40 Uncle's car, it would be interesting to know more details. Could you remember some of its details, Chris? For instance, if it was l.h.d. or r.h.d., the trim and other details that you find of interest.