www.925-1000.com

Thanks AG2012, There is a B in the central prong of Britannia's trident so a Bombay minted coin. Presumably the JAW is for a Chinese or Hong Kong silversmith?

These marks are on an ashtray that has a Hong Kong Silver Trade Dollar (or a coin that purports to be such) set into the centre. Does the mark in fact indicate 900 silver and is the coin genuine? Thank you. https://www.925-1000.com/pics/Ximg.jpg https://www.925-1000.com/pics/Ximg.jpg