Lacquer Cut At National Sound Corporation Published By Mike Clark Music Each runout etching of SW-1003 has 4 written over the 3. Matrix / Runout: SW-100 ̷3̷4-A 1004 (A-Side Runout Etching) Matrix / Runout: SW-100 ̷3̷4-B 1004 (B-Side Runout Etching) Matrix / Runout: NSC (Runout Etching Each Side, in oval) Rights Society: BMI