Rare Vintage Helbros watch with 10K gold plated flex band

Rare Vintage 1950’s Helbros quartz watch 10K gold plating Flex band Needs battery As is Do not know if it has scratches or not it is vintage has been worn in the past What does 10K RGP mean on a watch? RGP means “Rolled Gold Plate” Often seen as “10K RGP” or “1/30 10K RGP”This term is usually stamped on watches and is basically a very thin layer of gold bonded to a base metal. This type of piece has more gold than an electroplated piece has but it is still not solid gold. GF stands for gold filled.