vintage Royal Copenhagen ironstone china bread plate platter w/ oats & barley or wheat

Heavy white ironstone china bread plate with green grain design. This is marked Royal Copenhagen, which is not a mark you expect to see on restaurant ware!

I haven't been able to find out anything at all about this pattern, and am not sure of it's exact vintage.

This is a small platter, about 9" x 6" overall. It's in very good condition, very little scratching, no chips or staining.