Written by Kaye S. There are two types of subs, fast attacks and boomers.. Fast Attack subs serve two functions: (1) accompanying an aircraft carrier group to protect it from bad guys or (2) deployed alone on special missions as hunter-killers (searching for bad guy subs). They are designated with SSN in their name.
The $400 stamp in the sheet features the stamp-on-stamp design. Guyanaâs Kaieteur Falls, one of the worldâs most spectacular and powerful waterfalls, is shown in the selvage. An inscription in the selvage reads: âOne Cent Black on Magenta. The year 2006 marks the 150th anniversary of the printing of the rarest and most valuable stamp in the world, the âOne Cent Black On Magenta.â
The Treskilling Yellow: The Three-Skilling Yellow or Treskilling yellow is the highest priced single postage stamp in the world. This Swedish stamp is also another error postage stamp. Instead of its regular green colour, a printing mistake resulted in this three skilling stamps to be printed in yellow in 1855.