The 1881-1885 was post Civil War. Are you wanting the Civil War full flap type, or the later half flap type?
It would be the half flap. The Span Am period.
I don't know where to find a pattern. Might find a cheap repro to deconstruct or resort to drawing up your own. The one I make is more of a civilian pattern like Rube's.
Beautiful pattern and stampings on that one Craig. As always though.
CraigC That Flapper is absolutely GORGEOUS!!! Rube Your Flapper is also absolutely the BIZ!!!LET US PLAY SAFE