Note: in the lower left corner, the two broken lines do NOT both extend to the lower frame in contrast to the continuation of the corresponding lines in Stamp 8 in Row 2.

Confirmation of the identification of this stamp requires both characteristics.

The three dots are found consistently in stamps 16, 19 and 20. Other stamps show a small, faint spot in the RH position but it is not a consistent occurrence.

The flaw in the right hand recess has been found in all but one example of stamps with the characteristics in the left hand recess.

The extension of the frame from the recesses at the top is found on:

• stamps 30 and 36:
  from the LH recess, left corner;
  
• stamps 1 (minor), 4, 5, 10, 21, 32 and 38
  from the RH recess, left corner;
• stamp 42:
  horizontal LH recess, left corner.