The Scott Catalogue listings for #10 and #11 were revised to create #10, #10A, #11, #11A, sometime between 2005 and 2010. When your cert was issued #11A (earliest use October 1851) and #11 were the same catalog #11
To be clear, your cover has a pair of Scott 11As which at the time the certificate you have was issued were known as Scott 11. Earliest documented use of 11A is 1851.
So to answer your original post -- no your certificate is no longer correct.
Understand that the certificate is outdated. Wouldn't it be appropriate to say that instead of no longer correct, because the knowledge of the stamps has been improved to recognize the 11A. The posts above have provided the history.
Disclaimer: While a tremendous amount of effort goes into ensuring the accuracy of the information contained in this site, Stamp Community assumes no liability for errors. Copyright 2005 - 2026 Stamp Community Family - All rights reserved worldwide. Use of any images or content on this website without prior written permission of Stamp Community or the original lender is strictly prohibited. Privacy Policy / Terms of UseAdvertise Here
Posted 04/14/2020 8:49 pm
