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Reference Library / Patek Philippe / 3700/1A
Patek Philippe · Nautilus

3700/1A

Original Jumbo Nautilus

Reference Profile

Technical specifications

Production years1976–1990
Case size42 mm
MaterialSteel
Water resistance120 m
CrystalSapphire
MovementPatek 28-255 C
ComplicationsDate
RarityExceptional
Used market price€90 000–€190 000
New / unworn priceDiscontinued / no reliable retail range
Market trendRising
Investment score10/10
Service estimate€2 625–€4 725
Serviceability3/10
Collector Guidance

What to verify

Confirm case and bracelet numbers, dial generation, clasp type and calibre 28-255 C. Case thickness and bracelet taper are critical; refinished cases and replacement dials materially affect value.

Most commonly faked or replaced

Dials, bracelets, clasps, case refinishing and fabricated archive documentation.

Price date: July 2026. Indicative European market range, not a purchase offer. Condition, originality, set completeness, provenance, taxes and dealer margin can materially change the price.

Market values vary by condition, completeness, provenance and current demand.
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