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Community + OSINT signals haven’t landed for this reference yet. We don’t publish a rating against zero signal: the number would mean nothing. Editorial body + caliber + market value still surface above; ratings appear once the signal corpus does.
A discontinued limited edition of 500 in German Submarine Steel with a black hard coating. The risk here is not counterfeiting but coating wear and the edition paperwork, and the dial is unusual enough to be worth understanding before viewing.
| Area | What to check | What is correct | Red flag |
|---|---|---|---|
| case | Black hard coating condition | Even matte black across case and bezel with no bright metal showing at the edges | Bare steel at the lug tips or bezel edge, which cannot be locally restored |
| dial | Fully lumed hybrid ceramic dial | The entire dial surface charges and glows, not just the markers | Glow confined to applied plots, which would indicate a conventional dial and a different reference |
| movement | Caliber SW300-1, no date | Automatic winding with hacking seconds and hand-winding; hours, minutes and seconds only | Any date indication, or a crown position that suggests a date quickset |
| crown | Screw-down crown against the 500m rating | Crown seats fully and smoothly; a 50 bar rating depends entirely on it | Rough threads or a crown that does not seat, which should be resolved before the watch goes near water |
Pre-purchase sheet → The numbers to check, what to look at and what to ask, on one printable page.
