https://www.sothebys.com/en/auctions/ecatalogue/2018/from-earth-to-fire-l18301/lot.314.html
(#314) Two Fulda porcelain portrait medallion coffee cups and saucers, 1780-85
coffee cups and saucersporcelain portrait
https://www.frostantiques.co.uk/
Frost Antiques, specialising in Staffordshire Porcelain Pottery, Portrait Figures & Figurines
Frost Antiques and Pine, specialising in Antique Staffordshire Pottery, Portrait Figures and Figurines, Pratt Ware, Porcelain, Royal Pottery
frostantiquesspecialisingstaffordshireporcelain