Latest weight I can't ID! It looks like a caithness weight from 1976 designed by Willie Manson, CT60 in the Charlton book, but has to many canes surrounding the central cane. Mine has 14, CT60's have 11. I've been told that Paul Ysart made some very similar weights, so I was wondering (ok hoping!) that it's one of those.
The canes sit in the latticino base, and the base is completely flat. 2.5" high, 3.25 wide.