Matrix / Runout: E 3597/A B (Side A, stamped runout, variant 1) Matrix / Runout: E 3598/A B (Side A, stamped runout, variant 1) Matrix / Runout: E 3597/B A 5 (Side A, stamped runout, variant 2) Matrix / Runout: E 3598/A A 10 (Side B, stamped runout, variant 2) Rights Society: OSA Other: E 3597 (Side A, label) Other: E 3598 (Side B, label) Other: 76 2 (Manufacturing date code)