What is the difference between Old Imari 1128 and Old Imari 2451?

Royal Crown Derby uses pattern numbers to identify designs. The heritage material references Old Imari 1128 as a long-running pattern recorded in the 19th century, and the company later created other Old Imari variations sold under different numbers such as 2451. In practice, 1128 is the classic Old Imari family look used across many tableware forms, with strong gold and the familiar colour layout. 2451 is marketed as a separate numbered version within the same broader Old Imari identity. When buying, confirm the pattern number in the listing, then compare the border layout and colour balance to verified Royal Crown Derby images for that specific number.