Finally completed some of these.
Up for offer are 3 anticlastic raising mallets made to Michael Good's design out of UHMW PE (Ultra-High Molecular Weight Polyethylene - which, by the way is horrible stuff to work in comparison with Delrin!); these have a long thin pein for getting into the curve when forming anticlasts.
I also have 2 phenolic raising mallets per Finegold & Seitz' designs - they call for Bakelite, this is the modern equivalent, Tufnol. Really nice to use, doesn't bruise the metal in the way that a metal hammer can, but still very capable at moving metal in raising. Nearly lost my own one to a full-time silversmith when he decided he liked...!
£25 each, £3.50 postage.