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The bullets are rare. Unfortunately, an older man in Tennesse who at one time had a very large bullet mold collection by his own admission cast and aged some of them and this has cast a pall over the bullets for collectors.
Still, a very few of these bullets have come out of Civil War camps. Mine was dug out of a Texas troop position in Arkansas.
Given the scarcity of these bullets, I have to think they were private issue arms. This makes the mold a little less interesting to martial arms collectors, but it has to be an uncommon mold and therefore desirable. I only have a handful of molds and that one would get my interest!