I just came across the results of a November auction at Stair Galleries in Hudson, New York. The sale included a number of Wedgwood lots, one of which I would surly have bid on. The lot consisted of fourteen black basalt seals plus several other items —

The webpage of the lot with a number of good pictures can be found at https://auctions.stairgalleries.com/lot/fourteen-wedgwood-black-basalt-seals-3900026

Sure wish I had seen this one.