Cube Sixteen is one of Coffin's more obscure designs but is nonetheless a delightful puzzle. Five unique pieces serially interlock with one possible solution. It's much more difficult than you might expect; even disassembly can be tricky. Crafted of some of the nicest canarywood and rosewood I've found in a while, it displays well with a lovely symmetrical appearance.
58 copies in made for sale, each signed and dated. 15 copies in Patagonian Rosewood, 41 copies in Canarywood were made for this release. This puzzle is shipped assembled.