Cf. for other examples and a description on the series, Howard & Ayers, China for the West, vol. 1 op.cit. pp. 214-215: "Two similar dishes in the Metropolitan Museum, New York, are numbered on the reverse 13 and 21. It is by no means certain that all this series is concerned with tea, for 13 shows two men making canisters from metal (possibly for tea) and 21 shows the packing of a substance which may be ginger. (Elihu Yale wrote to Joshua Edisburg at Erthig in 1682, of 'jars of mango atchar: 'I begg you and your good Ladys acceptance of part in one of the vessels fil'd with our best mango atchar.') On 21 the substance does not appear to be in leaf form but to consist of rounded 'fruits'. The numbers 21 and 23 lend support to this theory, because one would otherwise expect the process on 21 to come after that shown on 23. Two plates, nos. 11 & 12, and a tureen (no. 19) overdecorated in red in Holland are also known."
Other examples from the same series: two plates, no. 11 (carrying boxes) and no. 12 (cultivating tea) now Museum of the American China Trade, Milton Massachusetts, tureen no 19, overdecorated in red in Holland, ibid; dishes numbered 13 and 21, Metropolitan Museum of Art, New York (Le Corbeiller, Cat 42) tureen, dish and sauce-boat, Fries Museum, Leeuwarden (De Chinese porseleinkast, Amsterdam 1968/9, Cat 274)