This wedung pamor motif is a descendent of Dietrich Drescher's "Pamor Poleng", designed by Mr. Drescher and executed by Empu Pauzan Pusposukadgo of Surakarta.
This motif was later copied by the pandes of Aeng Tong-tong near Sumenep in Madura. I have a Madura keris bethok with the poleng motif.
Alan, can i assume you were addressing the wedung in Marius' post #3?