Cup with a crowned monogram and flower sprays

Porcelain cup, painted on the glaze in blue, red, pink, green, purple, black and gold. On the wall a crowned monogram 'S.C.W.' flanked by angels with a trumpet. Under the monogram the date '1776'. The inner rim with a decorative band. Old label on the underside with 'S.C.W. (British Museum)'. A crack in the wall of the cup. Coat of arms porcelain with enamel colors.