PLEASE HELP: TRANSLATION - Japanese Item - What is it?

[anton67]

My buddy picked up this item.
I believe it is made of tin.
Any ideas what is could be?
It is about 10" X 6" and made out of aluminium.
Also please help and translate for me.
Thank you in advance for your help.

[MasonK]

Thanks, Mark! Piece actually measure 6 1/2' x 3 3/4".

[GHP]

I think it is either Chinese or Korean
金店洙
I get NO google hits ...

金 -- Gold [Kin; kane]; also the most common of Korean surnames; Kim
店 -- Shop [Ten; mise]
洙 -- Shū "name of a Chinese river". Zhū, Soo



--Guy