“The following figure, appearing in an auction, is a ridiculous forgery by adding a fantasy handstamp (anchor ‘lent’ from the French, the rest is fantasy) to a cto ppc. 1 C. was insufficient any postage. There are also no transit or delivery marks.”
[Editor] The following information supplied by Florian Eichhorn was published earlier in KP Vol. 53, No. 4, but because of forgeries of Korean philatelic materials showing up so often it is shown here as a warning. If anybody has information regarding forgeries please let us know. Together we can try to minimize the risks of (new) philatelists falling for these practices!