Genuine

Forgery A

This is not really a forgery but an envelope cut square.
The difference is that there are flowers in the design in the lower third.
There are sometimes mis-represented as stamps instead.

Click image for plain view

Bibliography

The Work of Jean De Sperati by the British Philatelic Association 1955

Album Weeds by Rev. R. B. Earee

The Serrane Guide by Fernand Serrane

The Forged Stamps of all Countries by J. Dorn