Rivet Spectacles - This early type of spectacle involved two round lenses connected by a rivet that was opened to permit them to sit atop the nose. Thread Loop (Threaded) Spectacles - These Spanish, and later Asian, spectacles were being held on to the deal with working with loops https://download-free-mp3-music67776.therainblog.com/20075226/a-review-of-collectable-glasses-frames