My local dealer has a history of Annuals, 5035, 5036, 5146, 5135, 5396 even a 5056, and I just find that the round ones work better. Although I usually like windows better than subdials for calendar complications I find that the buldging case of the 5135 combined with the slightly wedge shaped windows makes the whole thing feel "squished" to me...like a photo with a bunch of barrel distortion
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