Thanks Spence well said, was kinda lost how to answer

Should I measure my head ?

I'm 5'6 - 170 normal head - but empty, glasses fit me well, would keep but have enough already. Got them in a plug trade with Teleman a while ago.
These are glass (not plastic) polarized lenses and the frames have some scrollwork embossed in them - nice looking glasses. Been seeing some on ebay once in a while (model is discontinued) selling over $100.