Vintage Mido Multifort Extra Flat Swiss Watch, François Borgel Case, Cal. 1200A from 1950's

This vintage Mido Multifort offers a clean and balanced mid-century design, with a slim “Extra Flat” profile and classic 33mm proportions. The silvered dial, applied markers, and small seconds create a clear and functional layout that reflects Mido’s focus on practical, everyday watches.

What makes this vintage Mido especially interesting is its François Borgel case. Mido’s Multifort line was developed as a durable and water-resistant watch, and pairing it with a Borgel case reinforces that purpose. Borgel was a key innovator in early waterproof case construction, using a screw-back system and precise tolerances to improve resistance to dust and moisture. These cases are recognizable by their decagonal-style construction and internal markings - typically the FB “key” stamp, or as seen here, the “BRIT PAT 385509” marking, which refers to the British patent registration of Borgel’s design.

For collectors, this combination of a Multifort model and Borgel case represents an important step in the evolution of robust wristwatches. It brings together Mido’s reputation for reliability with one of the earliest practical solutions for water-resistant case construction.

CASE

• Stainless steel François Borgel (FB) case
• 33mm diameter (excluding crown)
• Thickness: 10.5mm
• Lug width: 16mm
• Screw-back construction
• Stamped “BRIT PAT 385509” François Borgel Patent
  
• Strong, utilitarian case construction focused on durability
  

DIAL

• Silvered dial 
• Applied hour markers with Arabic numerals at 12, 3, and 9
• Small seconds subdial at 6 o’clock
• Signed “Mido Multifort” and “Extra-Flat”

MOVEMENT

• Mido Cal. 1200A manual wind
• 15 jewels
• Serviced and in working condition