Silver Pair Cased Cylinder Pocket Watch by Brockbanks

An early 19^th Century English cylinder by Brockbanks in silver pair cases.  Full plate fusee movement.  Gilt dust cover pierced to reveal the table of the cock engraved with an anchor and flags, diamond endstone in a blue steel setting.  Gilt regulator on top plate below the plain three arm steel balance.  Polished steel cylinder, large brass escape wheel.  Signed white enamel dial with subsidiary seconds, Roman numerals, blue steel seconds hand, gold hands.  Silver pair cases, inner with silver oval pendant and bow, maker's mark "JN" in an oval and number corresponding to that on the movement.  Well fitted in a silver outer case hallmarked Birmingham 1819.