Miyota
Miyota's open-heart variant of the 9015 platform, featuring a skeletonized dial-side plate that exposes the balance wheel through a cutout in the dial. Shares the same reliable 28,800 vph architecture and 42-hour power reserve as the standard 9015. Popular among microbrands offering open-heart designs at accessible price points without resorting to Chinese movements.
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4 colorways
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The community take
Source 3 and 6 confirm this specific model (SN014) exists and are actually about it; sources 2, 5, 8 explicitly discuss different San Martin models (SN0144, SN0126, SN0149-G) with different specs, so their details (39mm case, 9015 movement, date window, bezel design, brushed dial) contradict the ground truth and must be dropped entirely. Source 1 discusses SN0148-G (different model). Source 4 references "the dial" and bracelet in a way that could apply to SN014, but the wish for a "36mm case option" implies discussion of a line, not this model specifically — I'll keep the bracelet and dial praise but note the sizing wish as line-wide. Source 7 and 9 discuss enamel dials in ways that could apply to SN014; source 9 explicitly mentions "the enamel dial's porcelain effect" and "orange dial," suggesting variant-level or line-level commentary on dial texture and finish uniformity
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