Dutch silver pre balance one handed verge watch Circa 1650

Silver verge with leather studded outer case
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A Dutch silver pre balance spring verge watch, signed by Bejamin Lysle Rotterdam, circa 1650. Fire gilt full plate movement, pierced and engraved balance cock.
Silver champlevé dial, chapter ring with engraved Roman numerals, single hand.
Silver chased and engraved relief inner case,  the outer leather covered brass pair case studded with silver.
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Signed: Bejamin Lysle Rotterdam
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Benjamin Lysle (Lisle). Rotterdam (Holland) c. 1640-1658.
Well-known watchmaker who, with his partner Johannes van der Thooi, witnessed the trial between Simon Douws, Huygens and Coster. They made a statement that the timepiece of Douws clocks was different from that of Huygens (Robertson; Huygens xvii; Antiquarian Horology, vol v, no. 3, 1966) Watch, V&AM, London.
Wrong hand.