Cf. F. Severne Mackenna, Chelsea Porcelain, The Red Anchor Wares, pl. 35, no. 72; George Savage, English Pottery and Porcelain, pl. 90 and the example sold in these Rooms on 15 December 1975, lot 103. The 1755 sale included as lot 23 on the First Day 'a beautiful tureen in the shape of a double pigeon.....'