Got some more club kilo stamps to sort.
Here is one I found interesting.
Scott says "boys doing farm work", But looks more like "reform school" labor to me.
A postal tax stamp which comes in four varieties (1958, 1959(2), and 1960).
I find postal tax stamp puzzling, as I'm not usually very clear about exactly how they are used. Seemingly dependent on country or time period as to how they are used.
This issue comes in different colors, reminding me of the Pakistan tractor stamps.
Will be on the lookout for the others.