Philately Bulgaria - New Generation

The stamps were in regular use until May 20, 1932 at postal and postal stations in Sofia (post office), Plovdiv, Varna, Burgas, Ruse, Lom, Gabrovo and Pleven, where airmail was accepted. The nominal values ​​corresponded to ordinary airmail to Strasbourg (263), Paris (264) and Lyon or Marseille (265). It was planned that a special plane would fly from Sofia to Strasbourg with the collected correspondence on May 17, 1932, which did not happen. During the days of use of the series, the accepted correspondence was stamped in Sofia with a special date stamp (with a plane) in black ink, and on May 17, 1932 - with red ink. Most of the letters that actually traveled with 263-265 were sent to Vienna by train, and from there to Paris - by plane or again by train. The stamps unsold within the specified period of use were then sold for philatelic purposes, after which the remainder of about 17,000 series were used for internal postal use, charging for newspaper dispatch at Sofia Station.