Both tubes have 7 connector pins. The RCA logo and "MADE IN USA" are printed in white on the side of the tube. The tube is enveloped in a card stock insert, which slips into a square card stock sleeve with black text. The text reads "U S NAVY Mfg by RCA Acpt (July) April 1944" and "US ARMY JRC 9001 Cont NXSA 21693 For Zenith Radio Corp".
Radio Corporation of America (RCA)
Printed in white on side of one tube
Printed in white on side of the other tube
Printed in white on side of tube
Printed in grey on side of tube
box: 1 in x 1 in x 3 in; tube: 1 3/4 in x 3/4 in x 3/4 in