Hello,
Currently on ebay are a series of photos of Spad S.XVI of SPAbi 53
https://www.ebay.com/itm/28575624688...Bk9SR5732PfEYw
The photos of the machine standing on its nose have been seen before and are stated to be S.9484 by Albin Denis.
http://albindenis.free.fr/Site_escad...adrille053.htm
Perhaps the photos of the aircraft with 'Julot' on its tail are the same machine at a different stage in its career,perhaps a different machine.
Hopefully at least some of these photos have not been previously seen as the seller has other photos of WW.I aircraft which are somewhat familiar
https://www.ebay.com/sch/i.html?_dkr...+photo&_sop=10
Regards,
Clint