I recently had a short holiday in Goolwa, South Australia. One day we went to Strathalbyn nearby as I had heard it had good antique/collectables shops.
They were right I found 3 really interesting paperweights including this Magnum(all 986 grams of it) with a signature of what looks like Christopher Hotken 97.
Turns out it is quite rare as the signature is Christopher Hotton who is often referred to as working with Michael Harris, but apparently was shy about signing things.
Hope all you IOWG collectors enjoy.
Ross