I'm particularly interested in knowing about the maker (apparently 'RSP Co', but I can't find any information on them) and the date of manufacture, but any other information anyone has would be welcome!
My wife inherited this from her grandmother, who lived in the Newcastle upon Tyne (UK) area. It has an orangey glaze on the outside, is plain white on the inside and base and has some letters stamped into the underside. The band around the top is silver plated.