Catalog Numbering for Michel, Scott et al. Printings, Remainders and Scarcity The Michel  6 Varieties The Michel  8 Varieties The Schilling Reprints Genuine and Imitation Paper Table of Colors, Gum and Paper Color Comparison of Originals and Reprints Reprints on Lemberger Pages

Maps of Heligoland     Heligoland Cancels Postal History      Postal Rates Reprint Data Tables     Forgeries Lemberger and Michel Color Chips Proofers' Signatures Proofers: Names and Signature Placement The Examination of Various Stamps The Robert Pollard Study

Heligoland Photo Attests, Befunds and
Kurz Befunds by Schulz and Müller;
also APS Certificates

These certificates are arranged by Michel number.

Please note there are a few that do not have certificates. However their
authenticity is fairly obvious upon inspection.