What is the coolest caseback you’ve seen?

Because, for me, it’s the one in Montblanc’s Iced Sea 0 Oxygen Deep 4810.

It features a beautiful relief, engraved in grade-5 titanium, and various shades of blue, obtained by laser-induced oxidation, depicting a diver’s view from under the ice. That’s quite fitting for a diving watch with a glacier dial, right?

I find Montblanc’s exploration remarkable, considering laser-induced coloring is quite sensitive to small changes as well as the optical characteristics of the laser beam, and so requires a careful optimization.

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For me it's the one of my Marathon MSAR.

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There's simply no other watch that state the radioactivity of its dial, standards to which it complies, GS cat#, or the company web site URL.

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I would agree it would be Montblanc for me as well. Iced Sea line has engravings on the caseback that always have “wow” effect on me. Including Montblanc summit engraving, glaciers, icebergs, etc. they use very advanced technology for this but still very admirable 🥶

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Yes I saw it yesterday live at Watches&Wonders. What they do with the casebacks is amazing!

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That's indeed very cool! My favourite is my Timegalaxy with its aventurine lumed rotor.

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My Montblanc has Mont Blanc laser etched into its bronze caseback…. Beautiful even if I do say so myself.

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75th Anniversary

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The 9SA5

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TimeJunkie

75th Anniversary

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One of my all time favorites!

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Tutimas divers.

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Catskinner

For me it's the one of my Marathon MSAR.

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There's simply no other watch that state the radioactivity of its dial, standards to which it complies, GS cat#, or the company web site URL.

200g of butter

200g of sugar

300g of flour

Pre-heat oven and Gas Mark 4 for 30mins

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CityHunter
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I was going to say that this I the coolest back case. I don't own one, but I think there's isn't a cooler one.

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CityHunter
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It’s definitely this one ☝🏻