Metal Heptode. Octal base. If GT is glass...... NOS as pictured. Check out the new pictures as the new lot are all RCA made for Western Electric and are new in box but accepted by the Joint Army Navy board (JAN) in March 1945 or July 1994. Older than nearly everyone except VK2XT!  I took one out of the box for the pictures but the others are all sealed.