2¢ Carmine 5LR14
Distinctive retouch in the lower right with gaps in the corners of both the frame and the right numeral box.
Leo's Notes
The LR corner of the frame is missing.
The vertical line of the RNB is thick except at the top and stops just short of the LR corner.
The bottom line of the RNB is thick except at the LL corner, and the line stops short of the LR corner, leaving a gap at the corner.
Guide dot in the centre of the left inner oval.