One of his more interesting uses of the mono-block was the Diana grade. The block was fluid steel, the tubes damascus with a band of fluid at the muzzles.

http://pictures.auctionarms.com/3575184557/63989a6945e3abe0080b59ea4af8098b.jpg?aa=20070123060143

http://pictures.auctionarms.com/3575184557/b3774d68baa0daee3356ae2e146322f1.jpg?aa=20070123060143

Pete