Hi sussexglass,
I had forgotten about you message until now. However, sadly I cannot give much information.
Until people realised that weights like this had apparently been made in Europe as well as Scotland, they were usually attributed to Paul Ysart. I had doubts about some I had seen because the way the base was finished did not seem to match other work by Paul Ysart - especially where there is a comparatively large round "pontil mark".
Trying to match the colours and form of the chips of glass in the ground proved to be of little help as no firm conclusion could be made.
Because of the problem in attribution of the "badge weights", I stopped commenting about them and even added an element of doubt to the two examples I have.
But over the past few years I have seen more on eBay that look like yours rather than others that probably were by Paul Ysart.