From Cubicdissection in 2008. Designed by Stewart Coffin. Made of Claro Walnut, 6 pieces 3" x 3/4" x 3/4". New in unopened original wrapper. CD's description is here: https://cubicdissection.com/products/copy-of-crooked-notches. Note: contrary to the CD description, the puzzle is not signed nor numbered.
