1969: yema produced the WORLDGRAF. This unusual model is little known among collectors.
The Worldgraf was designed based on a reworked France Ebauche Automatic 4611 movement: the cannon wheel is larger in diameter, the cannon pinion is from a France Ebauche 4612 because it is longer, and the cannon wheel and central seconds wheel are longer, also from the 4612, all to accommodate the two bowl dials, which create a significant height for the central axis.
The operation: two crowns, a disc for the time zones, and a bezel with the world's major cities. The hour hand completes one revolution of the dial in 24 hours. The upper half of the dial indicates daytime hours, and the lower half indicates nighttime hours. The inner disc (operated by the crown at 3 o'clock) allows the desired time zones to be set. With such a design, it is understandable that few models are found in working order. Without a standard model or a nomenclature, it's impossible to repair or improvise assembling such a watch.
There are three Yema Worldgraf models:
- Square (rounded) model with a black dial
- Square (rounded) model with a two-tone dial (moonphase): light gray/black
- Pyramid-shaped model (this one)
Case:
o Metal chromed with back in stainless steel, all marks and scratches all over, “patent pending”, this case is know as “pyramidal case”
o Fine condition with strong geometry
o 45mm without crown / 42.5mm lug to lug / 15mm thickness / 22mm lug width
o Plexiglass with some scratches
Movement:
o Mechanical automatic France Ebauche - working very well - photo of timegrapher
Dial & Hands:
o Untouched gradient grey in good condition, Rotating bezel, world time. Time display in 24 hours.
Bracelet Material:
o New 22mm light brown with generic chromed buckle
Conclusion / Condition:
Today, it's a true collector's item, highly prized by the brand's collectors, in good working condition…
please see photos as they are part of the description.
No box or pappers, no water proof test, sold as is, any question feel free for ask...
Keep in mind that it is a vintage watch, it is normal to be 1/2 minute early or late
wrist-treasure
