Mystery maker reward solved - see below. From the Boston area Arts Crafts to Modernist jewelry making art illustrator community, this hand wrought chased moss agate odd eye pin brooch stamped: A.C.K. Sterling.
2 X 1 1/2
Weighs 1/2 Oz or 15 grams.
Moss agate is 28 X 32mm. Art Crafts to Mid Century styling. A bit of artist info will accompany this very vintage no issues studio piece.
$10 USPS Priority/Ins/Track or FREE with your USA Ck or USPS MO.
Please collect with confidence after reviewing the dozens of Trocadero verified testimonials, then view All Extreme close up images for more info, as all Qs will be answered here in lieu of email reply.
Mystery mark solved! After years and years of futile research, this jewelry artist is still unknown to many. See image 2. Some say it is Anstrice Carter Kellogg. Substantiating online web pages must be made available to validate the maker. Contest for lower 48 states.
UPDATE: 9/2/15 A call came in from NH from a gentleman who as a youth was her lawn boy and fondly remembers Mrs. Kellogg to have been a prolific artist, jewelry maker, painter, head of the arts department at Saugus High and member of the Lexington Arts & Crafts back in the 70's or so. A blog will be written from the quick notes taken during his most interesting 2 hour call!