Hi, Does anyone recognise this piece of glass? I don’t know who made it or what its intended use was. It stands 20.7cms in height , weighs 1404grms and has a ground pontil and wear to the base indicating that its at least thirty years old. It has three deep dimples and then three more smaller ones! I have searched high and low and have not come across anything similar . I cant help but think its interesting. Any ideas?