A charity issue for the benefit of the Estonian Red Cross.
Printing: The vertical two-line typographed OPT was
applied by the GPW. The OPT is black and glossy.
Perforation: Of both values 10.080 imperforate and
the same number of perforated stamps were overprinted. One sheet of
the 5/7 mk. perforated stamps was destroyed before the delivery.
Proofs are not known.
Forgeries: Many different forgeries exist. The prices apply only to expertized items. Detailed descriptions are not within the scope of this catalogue.
Valid: Both values were completely sold out. They were valid until February 29, 1928.
Please note that all prices are estimates in USD, based on the average retail market of 1985, when the original catalogue/handbook was written. The prices are considerably higher today.