Pentangle Puzzles And Games, England, 2009.
(plastic box and 9 L-shaped wood pieces, 1+7/8 inches)
Assemble the nine L-shaped pieces into a die, with either legal green spots on the outside or legal red spots. Sold in the green solution, which is a "right-handed" die; the red solution is a "left-handed die". Directions tell how to get a "Certificate of Failure". Here are photos of two stages of taking these two solutions apart: