I can take a hint, Avion Ancien. Roland Garros, surely.

Still think it’s a Clerget.

Oooooooooooooh, I do have to be so unsubtle! Monument to Roland Garros at Cholet airfield commemorating, I think, his first flight there in 1910. I’ll double check the other brass plaques on the stone when next I am there and then I’ll post again. I’ll take your word regarding the what. I doubt that I could distinguish a Clerget from the clergy!