Postby dragonflywink » Fri Oct 06, 2006 1:37 pm
Patrick is correct, the "C.G.H." is the maker's mark for the Swedish company C.G. Hallbergs Guldsmeds AB. The next marks are "IMA" with the "MA" underlined, believe that is some sort of abbreviation of "PRIMA", an indication of the quality of plating, according to one source, Prima = at least 20 gram plating, Extra Prima = at least 40 g, with "60" added to more heavily plated items. The last letters are "ALP." for Alpacca (nickel silver), which is a silver colored alloy containing various quantities of copper, zinc and nickel (common formula would be 64% copper, 24% zinc, 12% nickel). Believe these marks started being used in the mid-20th century.
Cheryl ;o)