So very sorry it's taken me so long, I looked & looked......then spent another hour & 1/2 searching the net for info. This pendant looks familiar to me, so I thought I could find it....no luck. The only way to know for sure is to see a jeweler. Sorry!!!!
It has absolutely no marks on it. As I was research this pendant I found that overseas when my Dad was a pilot in air force, around that time...20's they were not marking gold & sometimes it was mixed with other metals as well then. So, I don't know. Nd that certain places overseas