Antique oversized Chinoiserie Cup/Saucer

I collect English antiques and this lovely cup and saucer has been with me for 25 years! I took a phot of it with my Blue Willow cup/saucer for perspective on size. It has a few brown spots consistent with age but no chips/cracks (incredibly!). The shop I bought it from left a sticker “Bowers 1850” on the bottom. Beautiful colors!