1858 Geosphere Limited Edition Automatic 42mm 18-Karat Rose Gold and Alligator Watch, Ref. No. 128255

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Editor's Notes

Montblanc's '1858' collection captures the spirit of exploration and mountaineering behind the Seven Summits Challenge. Released in a limited run to celebrate Minerva's 160th anniversary, this 18-karat rose gold automatic reference has been engineered in Switzerland with an innovative world-time complication featuring two SuperLumiNova®-coated globes that spin in opposite directions to complete a full rotation in 24 hours. It's fitted on a supple alligator strap to complement the black dial and bidirectional ceramic bezel.

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Details & Care


  • Swiss-made calibre MB 29.25 automatic movement with 42-hour power reserve
  • 26 jewels, 28,000 Vph


  • Hour and minute hands
  • Date window
  • Dual time zones with northern and southern hemisphere globes, day/night indication and 24-hour scale


  • Black dial
  • Beige Super-LumiNova®-coated bronze hands, Arabic numerals and indices


  • Bronze case
  • Black ceramic bidirectional bezel
  • Crown for time and date adjustments and manual winding
  • Sapphire glass crystal
  • Engraved case back
  • Pin buckle-fastening black alligator strap


  • Case diameter: 42mm; case thickness: 12.8mm; lug width: 22mm
  • Water resistance: 10 bar
  • Comes in a presentation box
  • This piece has been certified in accordance with the Hallmarking Act 1973
  • Reference number: 128255
  • Made in Switzerland
Product Code 22250442026292344

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