An informative exhibit of Cinderella stamps that serves as a good introduction to the topic.
This exhibit forms part of the excellent Alphebetilately site of William M. Senkus.
This website is created and maintained by Ann Mette Heindorff, a Danish stamp collector since 1952.
The purpose of this site is to show all Danish Christmas Seals in an online catalogue since they were
first issued in 1904. Further the site contains the seals of the Faeroe Islands, Greenland and the
Danish West Indies, the latter belonging to the Kingdom of Denmark until 31st March 1917, when the
islands were ceded to the United States.
Jan Langenberg's site is dedicated to stamps, zemstvos, revenues, perfins and other strange and rare stamps
like cinderellas and seals from Russia (Imperial Russia, RSFSR and USSR) and Hungary (Magyar Posta),and topicals
like lighthouses on stamps.
Here you can identify your weird stamps and at the same time help other people out. Initially, the aim was to
post stamps with an unknown origin. But over time, stamps have appeared whose origin is obvious, but do not
seem to be listed in one of the standard catalogues such as Yvert et Tellier, Michel, Scott or Stanley Gibbons.
Online store located in Denmark - for Christmas seals from Denmark, Faeroe Islands, Greenland and
former Danish West Indies. Site in Danish and English. Good stock of excellent material. Highly recommended.