No real surprise in the style of weights from ViDa Glass.
As the seller's various auction listings state, the maker, David Hurry, used to work with Paul Ysart at the Harland "factory".
The current eBay listings are the first I have heard of these weights, and also the ViDa company. It will be interesting to see if weights are a regular feature - so far none are shown in the company website, which is only in Norwegian!