Hello,
Currently on delcampe are two photos of Breguet machines:
Breguet Michelin BM 4 BR.392
https://www.delcampe.net/fr/collecti...120386838.html
Breguet Bre.14 B2L? No.6847
https://www.delcampe.net/fr/collecti...120456588.html
I have not previously seen B2L on the rudder of a Bre.14, but then I'm no expert and it may be more common place than I assume.
Regards,
Clint