3 boxes of Kerr Type 1 black impression coumpound, by Kerr Manufacturing Co., USA, 1970-1978
Box of Kerr Type 1 black impression coumpound, by Kerr Manufacturing Co., USA, 1970-1978. With the following written on the box "KEER REG U.S. PAT. OFF. IMPRESSION COMPOUND THIS PRODUCT APPEARS ON THE AMERICAN DENTAL ASSOC LIST OF CERTIFIED DENTAL MATERIALS TYPE 1".
Box of Kerr Type 1 black impression coumpound, by Kerr Manufacturing Co., USA, 1970-1978. With the following written on the box "KEER REG U.S. PAT. OFF. IMPRESSION COMPOUND THIS PRODUCT APPEARS ON THE AMERICAN DENTAL ASSOC LIST OF CERTIFIED DENTAL MATERIALS TYPE 1".
Box of Kerr Type 1 black impression coumpound, by Kerr Manufacturing Co., USA, 1970-1978. With the following written on the box "KEER REG U.S. PAT. OFF. IMPRESSION COMPOUND THIS PRODUCT APPEARS ON THE AMERICAN DENTAL ASSOC LIST OF CERTIFIED DENTAL MATERIALS TYPE 1".
