UK-Style Number Plate, "XK 150" (Black With Silver Letters) Looking to add some English flavor to your Jaguar? This number plate is made from a single piece of stamped aluminum with satin black painted background. Measures 4-3/8" x 20-1/2". The backing plate, (part number 17-2138, sold separately), is made from steel with a turned edge and finished in black satin paint. Check with local authorities and laws regarding displaying these plates.