There were two official printings of that issue:

- First printing = white paper (1919)
- Second printing = poor quality brownish paper by Soviet government (1921)

Forgeries are on off-white to light tan paper

Differences in design to tell forgeries from genuine are detailed in "Focus On Forgeries" by Varro Tyler, and "Forgeries of Common Stamps After World War I" by P. Clark Souers.

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