Dating coro marks
We share our reference material free of charge and work hard to make it accurate, but as with any research, mistakes can be made.
Vendome, best known for glittering glass beads and earrings, also featured other wonderful pieces such as the cabochon and rhinestone.We cannot stress enough that this is NOT a complete list. You will need to pick up one of Joan Van Patten’s books in order to get all the information you need. The lines in the spoke mark above almost appear straight, whereas these have more curved parallel lines with a straight line going down the middle. For information on valuing your jewelry, click HERE.We get a lot of questions about Nippon backstamps and dates of manufacture. (Note: the left bottom side of the Torri mark is slightly worn, it should be even with the right bottom side of the mark.) “Pagoda Hand Painted Nippon”, no known manufacturing date(s). “Imperial Nippon”, found in blue (shown) and green. Coro, Cohen & Rosenberger began early in the 1900's in Providence, Rhode Island.
As Coro they are familiar to all costume jewelry lovers.
Mark used since 1911, found in green, blue, magenta & gold colors.
" data-medium-file="https://myriadtradingco.files.wordpress.com/2010/05/minwreath47.jpg? w=300" data-large-file="https://myriadtradingco.files.wordpress.com/2010/05/minwreath47.jpg? w=474" class="aligncenter size-medium wp-image-124" title="Min Wreath47" src="https://myriadtradingco.files.wordpress.com/2010/05/minwreath47.jpg? Note that this mark has the artist’s signature underneath. “RC Hand Painted Nippon”, combination of both red & green colors (as shown).
One of the most exciting reference sources for attributing and dating vintage jewelry is the advertising in magazines from years past.
These wonderful old ads illustrate how jewelry was worn, when it was made, and how it coordinated with the styles of the time.
We are sharing a small list here (with pictures) of the ones we have come across in our Nippon journeys.