LONDON, [Newgate], Christ’s Hospital, Mathematical School, 1673, a silver medal by J. Roettier, double defined image, a pentagono ad lineam rectam introrsvm pro qvadrato, rev. a qvadrato ad lineam rectam exreosvm, single defined image, 56mm, 45.51g (MI I, 559/222). A trifling graze in upper obverse field, otherwise about extremely fine and toned, an extremely rare mule of two reverses £600-800

This lot was sold as part of a special collection, British Educational Award Medals from the Collection formed by the late T.H. Watts.

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The medal is made up of the reverses of two separate medals by John Roettier, dated to 1673. The image on this medal’s obverse is to be found in Sir Jonas Moore’s Modern Fortification or Elements of Military Architecture, London, 1689, and it would seem both images relate to the construction of a fortification