The location of the guide dot on the top stamp of the strip does not seem to match Neinken's mat for 56L1 (p 56 of his book), so the possibility of the bottom stamp being 76L1 is seemingly eliminated.
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