The LeJour Jurvac Model 8706/66 featured an interesting and innovative design, featuring a vacuum-sealed case filled with argon gas, advertized as water resistant to 10ATM. Intriguingly, these were referred to as diving watches, albeit without the common rotating bezel, signifying a diving watch.
The vacuum-sealed, argon-filled case was designed to maintain positive inner-pressure, prevent leaking, and was made by the same manufacturer as Glycine’s Vacuum watches. Argon gas was used for its dry gas properties, which contain no humidity. Thus, no condensation can form inside the case due to temperature changes, and therefore no corrosion can result.
LeJour was a French brand founded in 1965, and it operated through the early 1980's, specializing in more affordable versions of watches nearly identical to Heuer and Porsche Design/Orfina offerings of the era - such as the "Poor Man's Heuer," Le Jour's popular Valjoux-powered chronograph, which was identical to the Pasadena save for the absence of the Heuer logo.
1960s LeJour Jurvac “Whooper” Automatic Watch
DIAL: Brilliant original gold dial, signed Le Jour, with the Burger King logo. Original hour, minute, and second hands; date function at 3 o’clock position works as designed.
CASE: Original 35mm (w/o crown, 39mm with) x 43mm stainless steel case; of note, the top portion of this thick 14mm case is gold.
CRYSTAL: Original crystal; please take note the crystal has several scratches on it and a chip between the 3 and 4 o’clock positions. This case features no caseback – access is via the crystal.
BAND: New 18mm orange, gray, and black nylon NATO strap, with gold hardware, which provides a nice compliment to the gold upper case and vintage nature of this Le Jour.
MOVEMENT: Original Le Jour 17-jewel mechanical movement.
CROWN: Original unsigned crown.