thanks Fred - well, at least we now have the Kew pix for reference. Some of these centre pieces do survive - apart from their demise due to fragility, their present existence or otherwise may also be dependent on how many were made in the first place, and we've probably no idea of that. In the flesh some of them can be very striking - often in opalescent cranberry, ditto greens etc.
I also have the other Greener pix from Kew we discussed - hope to post tomorrow.