A superb pair of Chinese monogram plates.
These were probably made for Captain William Dick Gammage.
Captain William Dick Gamage EIC of Walthamstow, London.
(His father was John Gamage of Cambridge, Mass,USA)
 
William was in Canton (ship Belmont)  
around the time of the plate 1788,1790
 
(stylistically circa 1785)
He married Jane Stewart in Calcutta 1781
(His father was John Gamage of Cambridge, Mass,USA)
 
WJG could be for William and Jane Gamage.
In his will he swapped places for a voyage with Captain John Lennox
for the sum of 1000 pounds. 
 
Gamage's son was Court Marshalled for murdering
 an insubordinate sailor aboard HMS Griffin in 1812.