Antique Lilac Sprigged or Chelsea Blue Cup and Saucer

I bought this cup and saucer today, as I recognised it as Lilac Sprigged decoration, which can date back to the 1830's, but I think this is a later 19th century copy. It is very similar to Adderley Chelsea Blue pattern, but it is not marked and it has the look of being earlier than Adderley, and also I have not found any of the Adderley Blue Chelsea pieces with gilding round the rim and in the centre of saucer and cup. The gilding is very worn.