Simon And Halbig 1329 Doll Head Ceramic Mold By Byron B321a Vintage.  This is a larger head for an approximately 17" doll.  The mold is pretty large at approximately 5.75x7.5x5.85"  The resulting head will be approximately 5.75Lx4" from ear to ear.  The writing on the doll is very old so no offense was meant.  Thanks for looking at this auction.  Please see my other vintage auctions for more great finds 🙏