Euuuh, Yes
good guess, it's a JGr.West machine.
Le Bourget does concern only one picture ... one of the other can be Villacoublay and another one Cazaux.
As for 497, can be (120)497 too.
One of the picture of this batch shows an Emil of Erg.Sta./JG2, precursor of EJGr. West, then JGr. West ...
Last; EdWest gave us another link of for the same batch ...
An Arado 96 with ... JGr. West Emblem !
https://www.ebay.de/itm/Foto-Flugzeu...4AAOSwDmBdI0~h
So, all lead to JGr. West and/or EJGr. West
Regards,
Franck.