Blog

Notes on the references we build: how two similar models differ, what the name change means, and what we do and do not publish. New posts are added as buyers keep asking the same things.

10 Oct 2026

APS Factory closed, or renamed? What that search is about

Neither, in the way those searches mean. The name changed: this workshop now trades as OCTA, and APS Factory / APSF are the older names buyers still type in. The range, the build line and the QC step did not move.

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10 Oct 2026

15500ST or 15510ST: what actually differs?

In this build, less than the number of forum threads suggests. Both are the 41mm octagonal Royal Oak. Both run the same integrated cal.4302 clone. Both are the same price. The difference you can actually act on is which dials each reference comes in.

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