I know Christophe Lartilleux used a Mélodium 75A microphone for that vintage Django tone, f.e.:
I keep reading that Django recorded on one of those himself (for example in this thread: https://djangobooks.com/forum/discussion/12027/what-kind-of-mic-is-fapy-using-on-those-90s-recordings/p1)
Do you know a source for evidence of this? I have not been able to find a picture or a direct textual source yet and would love to know the source for this information. Thank you!