The 'mandarin duck and lotus' design of the current marriage bowl is based on imperial porcelain examples most commonly seen in the doucai palette. These bowls were part of the repertoire of court ceramics of the 18th and 19th centuries.
For four examples of this design, variously dating to the Qianlong (1736-1795), Jiaqing (1796-1820) and Daoguang (1821-1850) reigns, see Catalogue of a Special Exhibition of Cheng-hua Period Porcelain, National Palace Museum, Taipei, 1984.
A further example from the Qianlong period (1736-1795) is illustrated in Kangxi, Yongzheng, Qianlong: Qing Porcelain from the Palace Museum, 1989, p. 392, pl. 73.