This is a sticker sheet for the Taito Egret 3 which has a voltage warning. In Japanese. Basically it says "Don't touch this because it'll hurt" (probably).
A great item for use during a restoration project for the purist who likes everything to be just so.
Genuine Taito item.
Please note: The top item in the photograph is the description label that came with these labels from Taito, and is not included.