Thanks for your reply! The Timor Petrus Regout mark 1862-1880 is the closest match but the top of my mark has R. Regout across the top with Holland on the left side of the oval and Maastricht on the right side. The angel coming out of the crown holding banners in her hand is the same. I have only two dishes, exactly alike, that have this mark (see attached). I have a sugar dish,gravy bowl?(see attached), and 8 lunch size plates all with the blue rim and darker blue and red lining with a P.Regout Maastricht stamp pressed into back with different numbers 4X, 15 X, 19X. However the X looks more like crossed rackets of some sort. Would that mark date the plate as being from 1862-1880?