LONGINES RADAR PROOF ANTIMAGNETIC 12.68Z 1949 33MM RADIUM PATINA MUMETAL RARELongines
For auction a rare Longines cal. 12.68Z 23751 'Radar Proof' 33mm manual winding made of métal permalloy of nickel/metal making it much more magnetic than stainless steel (but without the stainless properties of steel, hence the patina) but this case may be entirely made of mumetal. These are very rare and mostly a well kept secret. They are some of the earliest antimagnetic watches to exist; they were not WWII era pieces but late 1940s and early 1950s watches. This watch was a UK delivered piece which I believe is the case of all the antimagnetic watches that Longines was delivering at this time. Rare, interesting and unusual.
Ref #: 23751 74
Diameter: 33 mm w/out crown, 36 mm w/crown, 43 mm lug to lug
Lug Width: 16 mm at the lugs tapering to 16 mm (will take a 16 mm strap)
Height: 12 mm
Power-reserve: 34 hours
Water Resistance: N/A
Gram Weight: 47 grams
Movement: Longines 12.68Z manual winding
Case: LONGINES special métal case with antimagnetic properties, screwdown caseback signed Radar Proof, later replaced crown
Dial: BLANK MUMETAL dial with radium arabic numerals, very much like a 6B dial but blank and antimagnetic, blued hands are missing their original radium lume
Condition: 80% (8.0 of 10): the case patina is interesting and unusual and the overall look is attractive, working well
Box/Papers: Watch only
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