List is copied from the Europa Stamp Blog!
08.04.2011 Latvia - 2 stamps (0.55 & 1.20 LVL)
23.04.2011 Lithuania
04.05.2011 Czech rep. - 1 stamp (17.- CZK)
05.05.2011 Switzerland - 1 stamp (1.- CHF)
05.05.2011 Russia - 1 stamp
06.05.2011 Finland - 2 stamps (2x 2nd class value)
06.05.2011 Slovakia - 1 stamp (0.90 €)
09.05.2011 Turkey - 2 stamps (0.80 & 1.10 TRY)
NOTE: This theme was first set for 2012!
PostEurop decided mid-2010 to reverse the proposed themes of 2011 & 2012 given that 2011 has been declared by the United Nations "Year of the Forests".
Let's hope that this change has been noted by each postal administration !
