GIVENCHY VINTAGE NECKLACE - FLEXIBLE CHAIN AND WHITE GLASS STONE

Today I have a Givenchy necklace.  It is obviously vintage - but I do not know the date.  It has a flat, flexible chain and a press stud type clasp.  It measures just under 16 inches.  (Most necklace made today are bigger than this!).  I like Givenchy jewellery!  This ones is marked - see full details on my web site - www.gillianhorsup.com - ref: 2545 B122/50 Price £110.  I usually have a few pieces by Givenchy in the shop.