Antique Coalport Cup and Saucer

I found this pretty cup and saucer on my visit to Antiques centre yesterday. It's a coffee cup and saucer, and I think it is the Adelaide Shape from about 1830-1840. Its a very pretty blue and white and gilded, with a wonderful handle! I think it is Coalport - I saw similar cups in my "Compendium of British Cups". There is a hairline crack on the cup, and some paint loss on saucer, but not bad for £4!