Not too long ago we posted here and several other places about the unusual Lego bricks BobG found at the Flea Market. In addition to all the usual places I emailed James Foulds Community Operations Manager of Lego who I met at the recent Brick Magic festival this Spring. It took him a while but we finally got as close to an official answer as you can possible have – from Lego itself.
Sorry about the long delay in responding. To answer your question, they were made by Samsonite:
Community Operations Manager
Community Dev. Americas & Australia
So now we know 100% that these are real Lego bricks. Thanks to Jim for the confirmation.