box: 1 in x 1 in x 3 in; tube: 2 1/8 in x 7/8 in x 7/8 in
Both tubes have 9 connector pins. The RCA logo and "MADE IN U.S.A" are printed in white on the side of the tube. The tube is enveloped in a padded paper sleeve, which slips into a box with black text. The text reads "ONE ELECTRON TUBE JRC 12AT7 7655 PHILA-51-13 (61) MFD. BY RCA (RCA VICTOR DIV.) ACCPD. JAN. 1953".