You mean the newer Voigtlander Bessa R2 cameras? Or the older original German Voigtlander? For the later japanese versions (Cosina), try TCW, ask for the older bald man (I forgot his name lah! He was from former Fotoguide and Konota), he knows best where to get Voigtlander. Ron Cameras at Adelphi basement also has very few items left, the older R2 I think.......
With love from Hong Kong....