On runouts for each side, final two characters are stamped sideways. Matrix / Runout: 2YEA.5153 (Side A label) Matrix / Runout: 2YEA-5153-1 M 1 (Side A runout, stamped) Matrix / Runout: 2YEA.5154 (Side B label) Matrix / Runout: 2YEA 5154-1 O 1 (Side B runout, stamped) Other: 7411 (Printer's date stamp)