2¢ Carmine 7LR12
Doubling in the left '2' and in the left numeral box, the bottom line of the right numeral box. The left frame is thick.
Research notes:
While not discussed in his book, Marler's personal collection had additional CPVs, usually with multiple examples.
Leo's Notes
Vertical line of the LNB doubled. The doubled lines are closer together than on 7LR21.
Lower half of the left frame is thick.
Bottom line of the RNB doubled. The lower line is directly under the top one. On 7LR21, the lower line is shifted slightly to the left.
Bottom of the 2 in the RNB doubled.
Two small horizontal dashes to the left of the bottom half of the 2 in the LNB.
Small horizontal dash in the vertical member of the T in TWO.
Similar re-entry on 7LR21.