I am going to try and split the topic. Please hold on...

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Vive la Marque !!

37350 - 51134 ?

After the Grand Prix of Monaco on April 6, 1930, which became the T37A (37350) of Burggaller?

Didn't Burggaller use any more its T37A, but its T35B which will become later, in May 1932 the T51A (51134?)

Can be that Willy Escher recovered the old T37A of Burggaller to make it modify with the factory in T51A (51134) on frame 37350.

That would confirm the indications given by the Museum of Mulhouse.

Burggaller never had at the same time two T51A

It did not use the T37A (37350) after 1930.

This becoming T37A can be the property of Willy Escher, would have been modified in Molsheim for him to be delivered in July 1932, as being a T51A (51134)

Willy Escher having run on another Bugatti for Klausenrennen in 1929 (4936)

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E. G. Burggaller(D)

T37A (37350)
- Klausenrennen 1929 Kategorie SportwagenE. G. Burggaller(D)
- III Großer Preis von Deutschland, Nürburgring 15 July 1928, DNF
- #4 IV Großer Preis von Deutschland, Nürburgring 14 July 1929, DNF
- #6 Grand Prix de Monaco 6 Apr 1930, E. G. Burggaller(D)

T35B (4842 or 4853) IA 5555 ex Emil Bremme
- Pyrmont climb (p/o Bad Pyrmont Trial, Hannover), 2.85 km, 22 Jun 1930,
- ADAC IV Eifelrennen, Nürburgring 6 July 1930, Burggaller, 2nd
- Klausenrennen 1930 Kategorie Sportwagen)
- #2 III Grand Prix de Monaco, Monte Carlo 19 April 1931, DNF
- #18 VIII Circuito di Alessandria 26 April 1931, 6th
- #2 ADAC VII Eifelrennen, Nürburgring 7 June 1931, Burggaller, DNF
- #4 V Großer Preis von Deutschland, Nürburgring 19 July 1931, DNF
- #17 I Internationales AVUS Rennen Berlin, Germany 2 Aug 1931, DNF
- #14 II Masarykuv Okruh, Brno, Czechoslovakia 27 September 1931, DNA

T51A GP mono. 1932 (51134?):
- #68 III Masarykuv Okruh 4 Sep 1932,Brno, Czechoslovakia, Burggaller, 1st
- VI Großer Preis von Deutschland, 17 July 1932, Burggaller,DNF
- #1 III Avusrennen, Berlin 21 May 1933, Burggaller, 2th
- #22 VII Eifelrennen, Nürburgring 28 May 1933, Burggaller, 2th
- VIII Grand Prix des Frontières, Chimay, 4 June 1933, DNA (T35B?)
- #36 IV Miedzynarodowe Okrezne Wyscigi Automobilowe Grand Prix Lwowa 11 June 1933, Burggaller, 2th
- #4 IX Grand Prix de La Baule 13 August 1933, Burggaller, DNA
- Gödöllõ (Budapest-Hatvan Road), 1st (2000 m),1933, Aug 15 ?
- #48 IV Masarykuv Okruh,Brno, Czechoslovakia, 17 Sep 1933, Burggaller, 1st
- #31 ADAC VIII Eifelrennen, Nürburgring 3 June 1934, Burggaller, 3th
- #44 I Prix de Berne 26 Aug 1934, Burggaller, 3th
- #2 IV Avusrennen, Berlin 27 May 1934, Burggaller, 2th
- #50 V Masarykuv Okruh 30 Sep 1934,Brno, Czechoslovakia, Burggaller, 2th

there is T35A replica to see:

http://www.bugattibuilder.com/wiki/inde ... lica-Duthu

Yes, but not made by Pur Sang Argentina. There are a lot of replicas around, but most of them one-offs. Pur Sang is making whole series....!