An 18th century embossed sideboard dish

An 18th century embossed sideboard dish, with a crimped rim, the centre depicting a dwarf pilgrim, the reverse with an assay scrape and initials, probably Spanish (town mark a bull in a shell, maker mark probably worn 'sil?', assay masters mark and date, partially worn 1752, 12.3in (31.2cm) diameter, 11oz.