UNIQUE VINTAGE LICENSE PLATE TOPPER *** PROBABLY ISSUED BY THE STATE *** THE "M" IS THE ROMAN NUMERAL FOR 1,000(AS IN POUNDS) ***  THEREFOR  THE "12 M" PROBABLY STOOD FOR LOAD LIMIT OR TRUCK WEIGHT **** THESE LICENSE PLATE TOPPERS WERE ISSUED BEFORE STATES BEGAN MAKING  THESE TOPPERS PART OF THE ACTUAL PLATE *** PROBABLY MID-CENTURY AND PROBABLY FROM KANSAS **** EMBOSSED ***  6" X3" ***DOES HAVE SOME PATINA AS YOU CAN SEE FORM THE PICTURES