Postby JayT » Tue Dec 31, 2013 1:42 pm
A couple of typos have crept into the last post in this thread. The crab mark was in use in the departments from 1838-1962 to indicate at least 800 fineness for smalls (la petite garantie). A mark between the lower legs of the crab indicates the department. From 1963-1972, the crab mark was used for both Paris and the departments. Since August 1973 the guarantee for smalls of at least 800 fineness is a small Minerva head facing right surrounded by a plain border. So the crab mark was in use from 1838-1972.
A Minerva head facing right in an octagonal reserve with a number 1 in front of her forehead indicates silver fineness of 950. The French silver standard from 1838-August 1973 was 950, not the lower, so-called sterling standard of 925. After August 1973, France was required to adopt the 925 standard to harmonize with other countries in the European Union.
See Tardy, 20th edition p. 200.