The Japanese port trade fair,, is a huge trade show where manufacturers show potential products they hope to market and sell !! Same as all the trade shows here !! Chances are this was one of the products that didn`t make it since I can`t find a reference to it. Possibly bought by someone after the show or was a freebie that they gave hoping they would like it !! Packaging looks like 50`s or 60`s !!