New Hall Porcelain Cup - Basket weave pattern

This was one of the 20p cups I bought the other day. I think it is an Georgian New Hall Pottery cup as the shape and pattern is identical to the one in picture 2 from my "Compendium of British Cups". Sadly it does have a crack, but so would I if I'd been made in 1825! I will add it to my collection of cups and saucers.