70 Years Old vintage— Tissot “Antimagnetique” automatic BUMPER | Ref. 6540-1 | Cal. 31-1 | Vintage~1955 |

Under the Omega-Lemania SSIH umbrella, early-’50s Tissot bumper automatics delivered robust everyday Swiss quality.
Dating & Context Rationale: Caliber 31-1 (early bumper automatic, c.1953–56) + case ref. 6540-1 + “Antimagnetique” script and period logo ⇒ circa 1955 (±2). 

SPECIFICATIONS

Movement: Automatic (bumper), Cal. 31-1, 17 jewels, ~19,800 vph, Incabloc.
Movement tested and running well. 

Dial: Silvered with applied Arabic numerals and railroad sub-seconds at 6. Professionally restored by a dial specialist using period-correct techniques; crisp black print and even silvering. Gold dauphine hands fills to match.Case: Stainless steel with screw-back (6540-1). 
Size: 35 mm (without crown) — Lug width: 18 mm — Lug-to-lug: ~43 mm.
Crystal/Crown: Domed acrylic crystal; unsigned, period-correct crown.

Strap/Bracelet: New olive canvas/NATO, 18 mm — shown on an 18 cm (7.08 in) wrist.
Water-Tightness: Splash Water Resistant (handwashing ok, not showering).
Box / Packaging: Box — Special customized secure black travel watch case.

📦 What’s Included

Box/Case: Secure black travel watch case.
Documents: invoice.

🚚 Shipping, Returns

Insured worldwide shipping.
14-day inspection period (unused, tamper seals intact).
Professional packing with tracking.

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