Nice stamps Ray, thanks for sharing them with us!

I had a look at them, last night before falling asleep and I have a question for Michael.
I have three old catalogues that list the first (red) stamp in the first picture and they each give a different date for it:
- McDonald (1998) - 1923
- Pulko (2002) - 1928
- Michel (1998/99) - 1929
What date does Isfila give for this?
The second stamp in the second picture is a 3 piastres proportional fees revenue stamp from the 1879 set.
I like its underprint pattern which stands out nicely under a magnifying glass or when enlarged on the screen.

I'm surprised the 1923 Izmir Economic Congress set isn't listed in Scott (other than in a brief note).
It has a full listing in SG, Michel, Pulko etc.