www.925-1000.com

... coats of arms side by side in one divided heraldic shield to denote a union. The problem are 9 diamonds compared with twelve in the mark with ``HAF``. Left side is unknown to me. Take a look here, scroll down: http://wappenwiki.org/index.php/Peerage_of_France Can a town bear family coat of arms? ...

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http://www.925-1000.com/forum/search.php?keywords=haf
there es a similar hallmark like the arms on the coin

there is an interesting hallmark on a spoon about from 1790
Makersmark is HAF.