Hi, The crowned 'letter P' mark, for the city of PORTO in Portugal, mid 19th century. Compare with this mark of unidentified silversmith in Porto working at that time. Zigzag line is sample of silver taken by the assayer. Regards
One more thing AG2012: what's your opinion about the french "head of boar" on this dish where as it is a portuguese dish? Do you thing custom officers thought it was a franch dish as they don't know thoses marks?