Porthole Style Moonphase Watches

UPDATED: After a ton of searching, I still haven't been able to find what kind of moonphase this is called. So I've decided to give it a name. I dub thee a "porthole" style moonphase (as opposed to the "bosom" style). This type of watch is comprised of a single circular window in which the moon is always displayed at the center. The shadow rotates covering the moon image.

I'm updating this list as I find more examples, and hopefully it will help future Crunchers trying to find something similar.

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Back to the post:

I've just started my collection with my first real watch purchase, an Orient Bambino which I'm in the process of modding, and I'm putting together a list of watches that I want. Some are specific brands, styles, and complications. One key piece to my collection is going to be a unique moonphase. After reading this article from Hodinkee, I'm looking for something with a similar moonphase to the IWC Porsche Design Compass ref 3551:

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I've done a little research, but I can't find an actual name for this type of moonphase. It has a single round window with a stationary moon. The "shadow" rotates to cover the moon as it phases. Just doing an image search for moonphase and doing nonstop scrolling I've been able to find:

(List moved to top of post)

I also found the Ball Trainmaster Moon Phase, which would be perfect, but the dial texture makes it look like a typical "bosom" moonphase watch.

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A beautiful watch. This one along with the Christopher Ward C1 Moonphase are good looking watches. But both are the standard "bosom" style. If either was a single circular window style, they'd be at the top of my list.

Doing a search for moonphase here, I found this beauty from Zelos:

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I've added it to the original post for future crunchers looking for the same thing.

I鈥檝e got 2 Moonphase watches that I think have that style:

The first is my Echo/Neutra Averau 39. The most affordable true moonphase watch I鈥檝e found at around 鈧800

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And I鈥檝e also recently got this Orient Star, but you might have the same issue as with the Ball.

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Both these lines have other dial colours and in the case of the Echo/Neutra slightly different takes on how the moonphase is shown and non pvd coated options. Should be able to get either for less than 鈧1000.

Matt84

I鈥檝e got 2 Moonphase watches that I think have that style:

The first is my Echo/Neutra Averau 39. The most affordable true moonphase watch I鈥檝e found at around 鈧800

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And I鈥檝e also recently got this Orient Star, but you might have the same issue as with the Ball.

Image

Both these lines have other dial colours and in the case of the Echo/Neutra slightly different takes on how the moonphase is shown and non pvd coated options. Should be able to get either for less than 鈧1000.

That echo/neutra Averau Moonphase is definitely another one, and with a double window to see the northern and southern hemisphere phase. Cool!

The orient looks to be a standard "bosom" style with the moon rotating in and out of the window (vs the shadow rotating on top of the moon).

Both nice watches! And I'll add the Averau to the main list.

Thanks!

I think this watch has a different display for a moon phase. I have not seen this type anywhere else.

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mpolyakov

I think this watch has a different display for a moon phase. I have not seen this type anywhere else.

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Is that a hand pointing to different phases? Does it go all the way back to the start for a new moon, or does it go back and forth? Either way, very cool!

epochalanalogs

Is that a hand pointing to different phases? Does it go all the way back to the start for a new moon, or does it go back and forth? Either way, very cool!

Yes, it goes back and forth, cycling every 29.5 days. Here is the closeup of the moon phase sub-dial. I do not know if this moon phase dial is simpler to implement than the other ones, but I searched for a while and I could not find another one like it.

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Matt84

I鈥檝e got 2 Moonphase watches that I think have that style:

The first is my Echo/Neutra Averau 39. The most affordable true moonphase watch I鈥檝e found at around 鈧800

Image

And I鈥檝e also recently got this Orient Star, but you might have the same issue as with the Ball.

Image

Both these lines have other dial colours and in the case of the Echo/Neutra slightly different takes on how the moonphase is shown and non pvd coated options. Should be able to get either for less than 鈧1000.

I have a Cortina GMT on this year's buy list, their styling is simply fantastic.

@epochalanalogs if you didn't see already, e/n also means a big moon version

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bipennate

I have a Cortina GMT on this year's buy list, their styling is simply fantastic.

@epochalanalogs if you didn't see already, e/n also means a big moon version

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I'm digging this one too! Not only do you get to always see the moon, but it gives you a text description of the phases along with the icons. Very cool!