Hi James,

Thank you for contacting Mearto with your appraisal inquiry.
The flat-plat imperforate or the 24 rotary waste sheet were issued in considerable less volume where as your stamp was issued more than 1 billion times.
Based on the photos and information provided, and subject to examination, this is:

A 1923 Black Harding 2-Cent #613 Flat Plate Perf 11 Stamp
11 perforations at the top/bottom, 12+ perforations on the sides
cancelled across the face, largely even margins
7/8 by 1 inch
CONDITION: ungraded, cancelled across the face
$2-5*
*represents a fair-market value for auction purposes; retail or asking price may vary.

Please let us know if you have additional items to appraise, and thank you again for using Mearto.