Imperforated stamps in general are printed for VIPs of the government. The number printed is limited and controlled with the number at the back of the stamps. The stamps are not gummed.

The number of the imperforated stamps for set is 200 pieces (4 sheets of 50 stamps or 8 sheets of 25 stamps).

The imperforate set of stamps are often to be found, but are sold at high prices. 

A multiple of blocks of 4 imperforated stamps is very hard to find.