Identification of Ginza Pearls

by laura le roux
(South Africa)

Hi,

I have 2 pearl necklaces. Both only have the trademark 'silver' on their clasps. 1xivory 28,8" long size 7mm pearl. 1xblueish 24"long 7,5mm pearl size. Both purchased in Japan, November,1975 from a shop that supplied a bag which has printed on it. OMURA, Ginza,Shineashi, DAI-ISHI-HOTEL. If that's any help. I know they are genuine pearls, but not what type, I'd very like to know, as I want to get them valued. Your assistance will be greatly appreciated. With many thanks, Laura Le Roux