Severijn Oosterwijck‟s earliest known spring-driven pendulum clock was first published by clockmaker-restorer Paul Shrouder Hon.FBHI, (see "A Mantle Clock", Horological Journal, BHI, Sept. 2008). Paul recorded his restoration and he alluded to its history. Dr.Jeff Darken, AHS editor of 'Antiquarian Horology', drew my attention to this, so called, Mantle Clock. I recognised the clock's historic significance and contacted the BHI, subsequently, at Mr Shrouder‟s workshop, I met the owner with his rare Hague-clock (NL. 'Haagse klok')......

Huygens' Authorities.
Readers not familiar with Christiaan Huygens and the early pendulum-era will find the Horological Foundation website invaluable. It includes a Compilation on the Hague Contract of September 3rd, 1657, between young John Fromanteel (1638-1692) and established Hague clockmaker Salomon Coster (1623-1659), the pendulum patentee appointed by Huygens as inventor. One long misread, still misunderstood clause alludes to a "secreet", that cannot be the pendulum or crutch which John already had seen and made. It taxes us yet. This clock may have great relevance to that lost secret. ....
 
 

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Reviewed by: Keith Piggott

Symposium under the auspices of the 'Museum of the Dutch Clock' FOR OPEN RESEARCH A paper presented by Keith Piggott King Charles II's Dutch pendulum striking-clock by Severijn Oosterwijck of the Hague, gifted to John Shaw with a Knighthood, in June 1660. The Royal Haagse klok Click here to open the printable symposium Paper

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