a.k.a. a.k.a. 5-Block Puzzle, Lodging House Difficulty
Very old design, this one made by J. A. Storer 2007.
(cardboard sleeve, 5 by 7 by 3/4 inch wood tray, and five wood pieces)
The problem is to exchange pieces A and B by sliding the pieces::
Presented in the 1914
both the 1942
present a 17 moves solution
(and Baxter's Page lets you play it on-line):