Blue Calico Staffordshire vintage blue white chintz china tea cups saucers

Vintage England blue and white Calico chintz china tea cups and saucers (two cup and saucer sets as shown, both in very nice condition without damage).

I know these are made in Stafforshire, but they're marked only Made in England, and I don't know the maker.

The blue is a nice deep cobalt blue color, and the white looks nice without browning or staining.