We're encased CSA stamps used?

Reading a CSA stamp site (don't ask) it is mentioned the 20 cent stamp was used much as fractional currency...got me to wondering about encased stamps in the south
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njcc
Encased Postage
I am not so sure about far south, but I would imagine Virginia, etc. would have accepted them.
I have collected CSA stamps (and covers, etc.) for years, and never come across an encased example.
I think it's possible that encased Union postage would have been accepted as small change in some of the border states, but I do not believe that any CSA stamps were ever produced.
To my knowledge, all of the encasing was done in the North.