An excellent site for jewellery research, including origin; value and resources. This page gives images and a description of DAVID ANDERSEN RARE ANTIQUE SILVER & GOLD “CHRISTIANA” SOLJE BROOCH 1885 NORWAY.
Reputable, and one of Sydney’s (Australia's) finest antique jewellery dealers. This page has a DAVID ANDERSEN CHRISTIANIA BROOCH of the same design as the earrings I've listed. The page includes an image of the hallmark 830; David Andersen; Christiania; 1886.
Italian artist Linda Fregni Nagler’s book The Hidden Mother collects 1.002 children portraits – tintypes, ambrotypes, snapshots, daguerreotypes, cartes de visite and cabinet cards – taken between the advent of photography and the 1920’s by mostly anonymous authors.
Provides authoritative comprehensive information on jewelry related subjects. Includes an Encyclopedia glossary of terms; a Forum for discussion and exchanging information; indepth Articles on jewelry history; an Image bank; Timeline. A fantastic resource site.