..From 1880 to 1933 there were two Swiss standards for gold, 18 carat signified by the female head of Helvetia, and 14 carat signified by a squirrel. These standards continued after 1933 with the same marks, but the sign of the morgenstern (which translates literally as "morning star"but was actually the name of a rather evil looking medieval spiked club or mace) was added for 375‰, i.e. 9 carat, gold — but only for watch cases as the note in the figure shows... for details read 'swisshallmarkrks' on the website, written and researched by valued veteran collector David Boettcher,
www.vintagewatchstraps.com