Hello!

I have an old looking brass pocket flask with a mark at the base that I can't figure out. Been looking for help on the net for quite some time now, but have found nothing. I'm not at all sure that it's chinese, might be arabic or something else..bur it would be nice to be able to rule something out.

Very thankful for any help! =)
(Sorry about the bad pics, only have crappy mobile camera, the mark has faded on one side though, so that's not the cameras fault)

made in japan

Thanks!