A Victorian 18ct gold cased open faced pocket watch by J.W Benson, reference 4658, the white

A Victorian 18ct gold cased open faced pocket watch by J.W Benson, reference 4658, the white enamelled dial with subsidiary seconds dial, the key wind movement signed J.W. Benson, the 'Ludgate' watch, number 36258, with 18ct gold inner dust cover, case diameter 50mm, total weight 124g.