Also you know that Panama used to outsource there stamps to Printers/Dealers who used to provide them stamps to Panama postal department and dealers were selling worldwide to collectors.!! same way like we are seen for small countries in Africa.
1) Error stamp in India : FORGERY in error stamp.!!
2) Olympic and Einstein stamp from Nicaragua selling under $1.!!
3) Is stamp printing as well as Quality Assurance is that bad in India because of lot of ERROR stamps.!!
4) International Philatelic Exhibition : Are full of FAKE and Forgery.!!
5) Great Britain Forgery of used cover.
6) British India King George Stationary is Genuine or Forgery !!
7) King George post card with Mobile post office or walking post office.!!
There are more than 300 blog post just about any possibilities in Philatelic collection so please read throughly and understand about my research.
Before you buy think about one of the possibilities and if you don't get any suspicious thought then buy it other wise you will REGRET whole your life.!!
Gandhi Stamps Club.