My late mother had one, she swore she could see things in it and  I remember sitting with her and an old pal of hers listening to them chatting away about what they  saw.  She sat me down often and got me to gaze into it till I was boss eyed, but nothing happened.  I now have it sitting in its open box on a bed of dark blue velvet looking very decorative, because that i all it is use for!!!"