Ernst Günther Burggaller owned the ex-Emil Bremme T35B. S/N is unclear, but only 2 35B had been delivered to the German Bugatti agent (Omnia München) before the first appearance of Bremme at a race (May 1927) - #4842 and #4853.
Around 1932 the car was rebuilt at Molsheim into a T51A and renumbered #51134. A new singleseater body was mounted.
Heinrich Joachim von Morgen owned #4948. Guy Bouriat drove this car as T35C at Monaco 1930, after that it received at Molsheim a T35B engine (#200T) and was sold to von Morgen. In May 1932 he traded it at Molsheim against the T51 #51139, possibly the ex-Varzi car.
#4948 was then sold to Paul Pietsch. #51139 was destroyed in von Morgens fatal accident at the Nürburgring 1932.
Emil Frankl in 1931 first had a T37A, and from 1932 anwards then a T35B. After Frankl's fatal accident at the 1934 Eifelrennen the remains of the car had been rebuilt by Alfred Brudes. No s/n known.
Hans Simons for long years owned a T37A, but no s/n known.
If you get more information from other sides, please let mw know.
(e-mail: michael at axos dot nl)