I would not be at all surprised if this is a pre-war car (say a Lincoln Zephyr Convertible), which has been modernised immediately post war. Bernath is quite a possible option. The treatment of the sills looks quite old fashioned to me, other than other Bernath creations. I also note that the car is left hand drive, so either an American or a German chassis would appear likely to me other than Franch, Italian or English, which were often still in RHD, and a certain group of users in Switzerland preferred this because of driving in the mountains.
