Rectangle tray 970 sterling semicircle or c help identify

[tarzanzgrl]

This rectangle tray is huge and heavy. The only marks state "Sterling 970" with a semicircle Mark and what looks like an arrow or cross marking inside of it. Any identification is appreciated. My great grandparents probably purchased this in Japan (maybe around 1940-1950) and it was packed with an Art Deco style coffee and tea service set marked K.Uyeda 950 sterling.

[davidross]

If this tray is Japanese, it would definitely be postwar, probably made during the Occupation (1945-1952).

The marks are not very clear in the posted photos. A cropped, sharper close-up of the marks would be helpful, but perhaps not conclusive, as a number of small retailers were active during the Occupation and many of their marks remain unidentified.

Regards
DR