MRC
·Noticing the serifs on the TACHYMETRE and TELEMETRE I do not believe a faker would go to that detail, that is a rather tricky font to reproduce. The "99" could also be a "66" or a "GG", so perhaps it is a vendor identification or an issue number. Was one of your parents in the military? The back shows a lot more scuffing than the face, which is consistent with something that has been in drawer for years.
Nice piece. Keep! Wear!
Nice piece. Keep! Wear!