Antique Tobacco Pipe Stand, Pipe, and three removeable bowls

I don't know anything about pipes. I recieved these from my uncle upon his passing. They belonged to my great grandfather. I could find no identifying marks on the wood, the stand, the shank, the stem, or the three bowls. He kept them on a mantle that was not cleaned at all for around 20 years. I was able to polish them up. The shank has a threaded end opposite the stem. There is nothing with the set that goes there, thus I believe a piece to be missing. It will close the shank. I believe it was designed to be removeable for cleaning purposes. The stand is removeable from the base as well as the stand being able to be dismantled. This is all the information I have on it.