I'm looking for more info about this car...
I found references in a book, were it was credited to Breuil & Barczinski, but another source gave the more probable Breuil & Garzynsky (Pierre?) name. I found another pic of it but nothing more.
Here's what I know from my archives PJ -
The BG Speciale was constructed in 1954 in a small workshop in the Rue Mace area of Le Mans and was named for Réne Breuil and Pierre Gar
czinsky (both from the Le Mans area). I have seen both spellings for Pierre's surname.
The car raced at that year's Le Mans 24 Hours as No. 54 driven by Réne Breuil and Jean Py. It was entered by Pierre Garczinsky. It finished 18th and last having completed 2,613 km at a speed of 108.9 km/h.
As an additional snippet of information - in the 1954 Rallye Sables-Solesmes two cars entered were No. 97 - a Simca Aronde driven by Réne Breuil and No.98 - a Ferrari 166 driven by Pierre Garczinsky.
I can't find any further competition results for the BG Speciale at the moment.
Réne Breuil also went on to build and race the RB, an Osca-engined sports racer that competed at the 1956 Le Mans event. (a subject of one of SACO's recent puzzles)