Tourist Spotter's Guide
Heinkel produced five Tourist models from 1953 - 1965. However only the final two (103 A1 & 103 A2) were imported into the USA.
However, older models have found their way into the country.
If you are trying to determine your model number, open the seat and look at the badge attached to the frame. The badge will appear near the valve cover. Odds are very good that you own a 103 A1 or 103 A2.
The following pages provide model data and a few distinguishing features of each model.