Interlocking - Rectangular Faces

Rectangular Faces - 1st Version
Rectangular Faces - 2nd Version
Designer:Stewart Coffin
Craftsman:Stewart Coffin

Both of these Rectangular Faces puzzles are distorted versions of the Square Face puzzle. The one in the bottom photograph is doubly distorted! Though resembling the Three Pairs puzzle, the construction is entirely different. Stewart made 2 of the one in the top photograph and 1 of the other in 1994. Numbers 97A and 97X in his numbering system.
More information in The Puzzling World of Polyhedral Dissections