Hi, I wonder what typeface this is.

Akzidenz Grotesk Medium Condensed  Suggérée par frd 

Looks very similar to DIN Condensed. Or DIN Schrift maybe

Yes, I thought so to, but the letter M and C don't match this typeface.

Because of the quality of the sample, it's hard to know for sure but try Akzidenz Grotesk Condensed.