Many thanks to Ouari Khemissi for this nice surprise from Algeria! Awesome!
The se-tenant panel of 4 stamps belongs to the "Popular Tales of Algeria" series, issued on 7 Dec 2009.
Next is a stamp from the "Protection of Polar Regions and Glaciers" series. It was issued on 28 March 2009.This lovely registered cover was posted on 21 Dec 2009 in (Setif?) Algeria, and reached me a month later on 22 Jan 2010.