The colors in the background are appropriate for the 1970's. My word! He must have borrowed those glasses from the hapless construction workers he munched on. They look rather like thick welder's lenses on top of diver's lenses. I like the fob with its knotted strings hanging down, and those pentacles jutting out from the frame around the bridge of his nose.
It certainly looks like Depp's Barnabas and with the steampunk goggles, he'd fit at home in four decades. Studying this has been fun.