I'm working my way through my accumulation of Lebanon stamps, back of the book material first, then definitives (I notice I have a lot of stamps depicting the Cedar of Lebanon), and commemoratives last.
Here are a couple more revenues:


I only have one example from that 1930-1940 postage due series, the 50c black on rose paper (Scott J29), unused but no gum.
I especially like the various commemorative series from the 1930s to the 50s that depict views of crusader castles, Roman ruins, modern government buildings, palaces, etc.
Cheers, Robert