TWO BLUE AND WHITE 'LANÇA' CHARACTERS STEMCUPS SEAL MARKS AND PERIOD OF QIANLONG AND JIAQING

each with steep flaring sides resting on a tall hollow splayed stem, the exterior with eight lança characters wreathed by undulating leafy lotus scrolls, the stem bordered with ruyi-heads suspending interlinked tassels, one inscribed with a six-character Qianlong seal mark, the other with a six-character Jiaqing seal mark