Mathews, Welchpool - A George III silver pair cased pocket watch

circa 1805, the outer (and inner) case by William Ryley with Birmingham hallmarks for Sterling silver, the lid activated via a push button, the open faced pocket watch with unsigned white dial, 42mm diameter, black Roman numerals, gold coloured spade hands and chemin de fer chapter ring, the signed front loading mechanical key wind fusée movement ornately engraved and numbered '151', with pierced and engraved balance cock, gross weight 127.3g and presented with the winding keys