Spectra helmets are produced by 3 different manufacturers :
Manufacturer | Type of mark | Date |
Gallet | Round in the bomb | 1992; 1993 |
CGF Gallet | Armée Française in the side (black) | 1994 |
CGF Gallet | Armée Française in the side (white) | 1995, 1997 |
Melco | Armée Française in the side | 1994; 1995 |
Induyco | Armée Française in the side | 1997; 2000 |
The Spectra made by MELCO has screws like the F1/S1 on the outside of the helmets to fix the liner.
The other Spectra (Gallet and Induyco) have rivets like F1/S2.
The Spectra2 (not an official name) differs by the missing of the rubber rim.