2¢ Carmine 5LL8
A distinctive retouch of the vertical line of the left numeral box.
Leo's Notes
The left frame is thin opposite the LNB.
The vertical line of the LNB is thin at the very top, and retouched from below the top but stops short of the corner, leaving a gap. It is especially thick near the top. At the bottom, it is rounded with a white dot inside.
The bottom line of the RNB is thick, possibly doubled due to a minor re-entry.