Keyes heavy double link gold tone chain necklace vintage jewelry ll2014

This gold chain is very heavy with solid double links (5/8 inch wide). It has a fluted deco style clasp. Both ends of the necklace are signed Keyes in script. Keyes is/was a Canadian company. I'm not sure they still exist. The necklace measures 18½ inches long and is in perfect vintage condition. I believe this is gold plated. Absolutely no sign of wear or deterioration.