This is one of the few write ups I've come across about the B12, the only other was an article in Classic Cars edition of 1999 (they confused the B10 with the B12 in several areas)
This article was about 3 of the main contributors going to France to collect the ex-Emperor of Vietnams B12, bought at auction in 2008.
It was then to become part of their collection, French registered as 58 DF 75 (Paris department), 1954 Series II ( Lancia blue, only 71,000 Kms on the clock), does anyone know of it or have any other information on it?
P