An Austrian gold-mounted green natural stone case, Vienna, maker’s mark AK, 1922-1925. The bright yellow gold mount stamped with a geometric pattern, the case of polished natural green stone resembling spinach jade or nephrite, struck with maker’s mark, gold standard of 585 (equivalent to 14K), and Vienna hallmarks for 1922-1925. 3 x 2 1/8 in. (7.6 x 5.4 cm.)
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