I bought one of the rudders shoes advertised on EBAY, it arrived today. It is certainly a very hefty piece when compared to the original. I'll post some pictures tomorrow of both shoes , new and old, side by side so you can compare.
The seller said his friend had several of these cast several years ago and just recently dug them out to sell. I don't know how many he has, but I mentioned posting here if he had more to sell.
Later
PS I will add I feel like this is nearly twice the weight of the original and will positively need to be milled (ground) down to use, it's just TOO hefty a piece.
I really don't need it as my original is in good shape. If a member does, contact me, The price is cost plus zero.