1870s English Imari / Sterling Silver Match Striker

This lovely Imari style, flow blue match strike is a bit of a mystery to us. The design is typical of the the Japanese porcelain of the Arita region widely exported to Europe in the late 1700s onward. Continental porcelain houses started producing their own Imari-style items in the 1800s to provide this aesthetically popular chinaware to the Western markets. Without a maker's mark on the porcelain, it is impossible to say the exact origin or date of fabrication, but because of the sterling silver collar described below, we believe it to be English.Not being well versed in British hallmarks, our research on the marks stamped in the sterling silver rim turned up mixed results and any potential buyer should satisfy him/herself as to the provenance. The rim contains 4 (somewhat) legible hallmarks and possibly a 5th illegible mark. The lion passant indicates British Sterling. The Assay office mark (where the silver content was certified) appears to be the uncrowned leopard mark of London. T