The Bergheil is listed in my 1929 BJP Almanac (it was also known as The Tourist), and there was a choice of 4 standard lenses f4.5 Skopar, f6.3 Collinear, f4.5 and f3.5 Heliar (that order is the extra price). These were all 165mm. However the cameras can be found with longer Heliars.

The the Collinear was similar to a Dagor and could be used split to give 3 focal lengths. Voigtlander also sold them separately with different combinations of cells.

If you want to use the camera one option while you're looking for an original lens would be to find a 165mm f4.4 or f6.3 CZJ Tessar, these are quite easy to find at reasonable prices.

Ian