S21 - World Space Week Sold Out

The UNPA website informs us that the World Space Week personalized sheet has sold out after a little over a month on sale. This quick sell out confirms the increasing popularity of the United Nations personalized sheets, and perhaps the popularity of space-themed philatelic items. According to UNPA the last day of sale was 12 November 2007. The Climate Change or Peaceful Visions sheets may soon follow, however, the 0.65 euro stamps in this sheet will have unique Scott numbers - so this may have led to the early sell out.