High shutter speed but even faster Foudroyante needle:
This is a Panerai Radiomir 1/8th Second, ref. PAM00246. The left needle rotates one time and ticks eight times per second. The movement OPXX1 in fact is a La Joux-Perret (formerly Jaquet) LPJ 8952, which initially was developed by Jaquet for Graham. The movement is mainly a Valjoux 7750 with integrated Rattrapante (controlled by a column wheel contrary to the normal chronograph) and Foudroyante (driven by a separate barrel) mechanisms.
Cheers,
Mick
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