The top 2 stamps are from the 'Museums' 4v set of 1966 showing close ups of the Ishtar Gate. During a Middle Eastern exhibit at a museum I once worked at we painted the doors as the Ishtar Gate using sponges dipped in paint for the bricks. Not quite lapis lazuli!
Thank you Tiem!
Thank you Paleophilatelie! 2013 'Museums' FDC.