Hello,
Currently on ebay is a photo of the future RFC Caudron G.3 Serial 4293 wearing its SFA serial C567 at:
https://www.ebay.com/itm/R-A-F-Caudr...UAAOSwULJe5mzy
Interestingly Albindenis has this machine with L'Ecole d'aviation de Châteauroux in February 1918. Were RFC machines then transferred back to France?
Regards,
Clint