Unusual Inflatable Nintendo Gameboy Super Mario Land

Hi , I found this today at a local carboot sale. It's a 1992 Official Nintendo GameBoy float! I've searched the net all day and the only two ebay listings I saw where different as although the same float those where from 1990 Nintendo Of America. Mine is 1992 Nintendo EU. I really want to learn more about this , potential value? Where where they sold? Can anyone shed some light on the subject? Thanks! Photos attached! (comment section)