Here we have a very rare William 1V Rococo style decorated 
 Cup & Saucer
Made by
Rockingham
Rockingham made china for former early Kings & Queens 

Bears the Red Griffin back stamp.
and reads 
Rockingham Works, Brameld ,Manufactures to the King,

This was King William the 1V, he only reigned from 1830 to his death in 1837,
after 1837 Queen Victoria reined, the above mark then changed to manufactures to the Queen.

Rococo Style , means characterized by curved asymmetrical forms and elaborate decoration, this pattern falls into this period category, decorated with swirl & leaf forms around the cup & Saucer in Grey & gold gilt
great condition for its 180 years plus age , no cracks  , repairs ,both don't ring , because I believe they  was made from soft paste clay . 
measures , saucer 17 cm x 3 cm high, the saucer has no cup seat well to house cup ,typical of early saucers
the cup measures 12 cm across not including handle x 6 cm high 
A Rare 1830 to 1837 Cup & Saucer with great history & condition ,would grace any collection