It says "Northumberland House, Trafalgar Sqre" on this printed tray. Great looking old print. What is funny is under a 25x magnification, the colored background shows dots for printing, but the dark linework does not. Not sure what kind of printing process this is. I can't find any old photos or prints that show this period or any comparables for this.

　　Frame is 16.5x12.5 and is in great shape. It has handles at each end and is backed with cork. Can be hung.