This Strathearn DSF43 weight has no formal description that I've found yet but it's description is like that of the preceeding DS43 Jumbo weights, a five petaled flower over three green leaves and rising above five twisted double latticino strands but the DSF43 would have a top facet and ten side facets. It may have also been made in the same colors as the other Strathearn Flower weights, Madder or red, Gentian or blue and Turquoise. I would expect its size to be somewhere between the DS43 Jumbo Large and the DS43 Jumbo Small weights. This would have been a very limited edition with only a rather small issue yearly. It was discontinued in May of 1978 and production was probably from around 1970 to 1978. The S76 one shown is the only one I've ever actually seen. Updates will be added as I find out new information.