Vintage Faceted Glass Cube Paperweight Pen Holder Hollow Center Mid Century

Vintage Faceted Glass Cube Paperweight Pen Holder Hollow Center Mid Century I don't have any details of the origin of this paperweight. It was purchased from the estate of an avid paperweight collector. It is believed to be from the 1960s or 1970s. There a few small chips on the bottom. Not obvious at all, but you can see them if you look for them. Pen is not included. 2 1/2" tall Smoke Free Home PW6