Vintage MCM Glass Cube Candle Holder, Concave Sides, Double Ended Czech

Bohemia Glass made in Czechoslovakia? Most likely from Czechoslovakia but cannot guarantee. An unusual and attractive chunky cube glass candle holder - one end holds a dinner candle , the opposite end has a larger opening and will hold a tea light. Please note that the opening narrows towards the bottom, so the tealight rests around half way down, rather than flat on the base. Each of the other four sides have an indented concave circle. I think late 60’s or 70’s in date - there’s a little roughness here and there to the edges, and a few little fleabites, but these not obvious and more easily felt than overall in good decorative order. Measures 7cm to each side.