Would you be able to upload a photo please? Is the jewelry antique or vintage? Is is made of silver or gold? Can you tell if it's fine jewelry or costume jewelry? The number 9 does not necessarily mean it's made of 9 ct gold. It could be a design number, for instance.
FYI - Norway -EC - Erling Christophersen born 1932, the husband of Anna Greta Eker, and the person who managed the Plus silver workshop in Fredirkstad. For those who may not know Greta's mark on her silver jewelry is occasionally found with Christopherson as her last name.
