Just got this yesterday. Liked the map and flag of Manchukuo and the box. Supposed to have been found in a Tokyo Flea Market, and the box with it. When I got it home noticed the small writing on the box side, if this is a stylised ‘da’ then it supports the box being the original to Ikedasan.
The underside of the lid has a retailer’s label, does this give a hint to where it was bought and maybe the regiment.
Cheers,
Tony
?

Click to enlarge the picture