LetterBox IPP42 Exchange Puzzle
1 October 2025Edward Hordern IPP Puzzle Exchange – Tokyo, September 2025. Designed by Frank Potts. Made by Mr Puzzle Exchanged by Brian Young. 105 made. Original Price:…

Goal: Remove the 3 stamped envelopes from the LetterBox and put them back in again. You’ve got plenty of time; it’s snail mail.
The puzzle is three interlocked burr pieces inside a clear box set on a base. A very difficult caged burr.
The puzzle is laser cut from 3mm clear acrylic and 5mm white and blue acrylic pieces.
Size: Base: 65mm x 65mm x 10mm Clear box: 48mm x 48mm x 48mm.
Packaged in a kraft cardboard box.