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Royal Oak Openworked Extra-Thin

Ref. 15203PT.OO.1240PT.01
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The Royal Oak 1972-2012 features a skeletonised version of Calibre 2121 (Cal. 5122) which is highlighted by a contemporary decoration and a galvanic anthracite treatment. Platinum 40-piece limited edition.



  • Material Platinum
  • Water Resistance 50 m
  • Size 39 mm
  • Thickness 8.1 mm


Slate grey dial, white gold applied hour-markers and Royal Oak hands with luminescent coating


950 platinum bracelet with AP folding clasp

Calibre 5122 Manufacture

  • Functions Hours/Minutes
  • Number of jewels 36
  • Mechanism Selfwinding
  • Power reserve 40 h
  • Total diameter 28.4 mm
  • Number of parts 248
  • Frequency 2.75 hz 19800 vph


Two year warranty

Your watch is guaranteed against manufacturing defects for a period of 2 years subject to our International Sales Warranty.

Five year warranty

Applicable to all AP watches purchased through our authorized network from 1st January 2017 subject to our International Sales Warranty.

Extend your Warranty