A blue & white trigrams; strongly potted with sturdy sides supported on a thick footring with an unglazed recessed centre; the exterior painted with two opposing dragons amid clouds and facing a large circular medallion enclosing a trigram, and with a character “Er” (two) above the centre, the interior glazed in a bright blue monochrome. Qing dynasty. Box (as shown). Provenance: Kwok Gallery, Singapore, 7 May 1991. Bonhams, Hong Kong, 26 May 2014, Lot 172 (Copy of original receipt will be provided, if necessary)