crown ducal dinnerware

g'day can anyone help me to identify the pattern and age of a dinner set i have? it's crown ducal, ivory with a formal pattern of cobalt and gold. the pieces have the crown ducal gold logo on the bottom with 'made in england AGR' and, variously below the the gold stamp an individual letter A, N, S or T. there's no indication of the name of the pattern. many of the pieces are very crazed, some are well worn while others look almost new.

is there anywhere online that will help identify the age and pattern of a set like this? as we acquired the set from a relative, i can estimate its age and say it's at least 40 years old, possibly a lot more. having researched online for many hours, i'm none the wiser!

any suggestions gratefully received!

Probably the most well-known of the Crown Ducal trade mark of AG Richardson are the beautiful tube-line designs produced by Charlotte Rhead.

One of the large (15' chargers with the sailing ship design would probably be pushing the £ 1000 mark today.

Oops, I forgot to include the address of an article about AG Richardson in my earlier post :- http://www.netcentral.co.uk/steveb/features/ richardson1956.htm