— Official Pattern Name:
Iris (UK), Blue Iris (US)

— Circa:
1985-90

— Models:

504 – 800ml Round Casserole
507 – 1.25 litre Round Casserole
511 – 2 litre Round Casserole
517 – 3 litre Round Casserole

524 – 1.4 litre Oval Casserole
535 – Chicken Roaster
542 – 1.7 litre Oblong Casserole

xxx – 22cm Side Plate
xxx – 25.5cm Dinner Plate
xxx – Oval Plate
xxx – 22cm Soup Plate
xxx – 550ml Soup/Fruit Bowl
xxx – 13cm Bowl
xxx – 24cm Salad Bowl
xxx – Cup
xxx – Saucer

728 – Round Casseroles, set of three = 800ml (504), 1.25 litre (507) and 2 litre (511) round casseroles

Dinner Set (30 pieces) = 6 x 25.5cm dinner plates, 22cm side plates, 500ml soup/fruit bowls, cups and saucers

[information source: http://bit.ly/UoNk72]
[information source: http://bit.ly/1jpMVcO]