Please see photos for evaluation. In the second photo I am pressing the plunger when I took the picture to show this is the real deal. Excellent condition with no broken parts.
Besides being an extremely rare packaged set (the only OSS example I know of is owned by collector Alec Peters), this Canadian variation is virtually unheard of (it has both English and French writing, indicating it was for the Canadian market).
Another recent event worth mentioning - there's a seller (goldentreasures-nyc) who apparently found a batch of OSS Whitman 4559 Major Matt Mason Frame-Tray Puzzles: http://www.wildtoys.com/MMMPage/MMMmisc/MMMWhitman/Frametraypuzzle.jpg
These are still sealed and well worth the purchase - they starting off selling in the $130 range but have gone down to the $50-60 now that demand has lessened - still a deal by anyone's standard with an OSS puzzle approaching the value of a loose one.
-- Best, John