An icon of French tool‑watch design, this vintage Yema Superman Worldtime/GMT combines the brand’s signature 990 FEET dive rating with a practical 24‑hour/GMT display. The matte black dial features bold lume plots and “WORLD TIME” script, framed by a 24‑hour bezel and Yema’s patented bezel‑lock system. Inside beats a period‑correct France Ébauches automatic movement. A rare blend of diving pedigree and travel utility, the Superman GMT is a collectible classic that wears with true vintage charm.
 
Specifications
Model: Superman Worldtime/GMT, 990 FEET (circa 1970s)
Movement: France Ébauches automatic (GMT/24‑hour)
Case: Stainless steel with bezel‑lock hardware
Bezel: 24‑hour Worldtime scale
Dial: Black with large luminous markers; date at 3
Crystal: Acrylic/mineral (period correct)
Water resistance: 990 FEET as printed (vintage—pressure not guaranteed without service)