Can anyone tell me about the origins of this pocket watch?

(Swipe for more photos) Recently, I was at a gaming market and came across this nice pocket watch. Judging by the sticker on the bottom of the tin, it looks to have been originally distributed in Japan only. It also mentions the year 1985, but I know that could just reflect the copyright, rather than the actual year this item was released.

I was wondering if anybody here might know how it was originally sold/distributed, and how old it truly is. I love learning about the origins of collectibles.