Tom, very nice, not seen this fellow before.
Could you offer the perf guage please? 11½ or 12 ?
I am having difficulty confirming Michael's appraisal.
McDonald suggests 1924
Black and red on Buff? (does not look like buff to me)
also "Turkish script underprint"

Is anyone able to explain this.
Script reads National Defence Association 28mm x 20.5mm