Nice looking call. After you asked about the finish that got me wondering and seeing how it is used for fence posts because of it's rot resistance I would think you could use any finish you prefer on it. I looked it up and it's actually a juniper tree.
( (juniperus virginiana) Eastern Red cedar, Red Cedar, Eastern Juniper, Red Juniper, Pencil Cedar) is a species of juniper native to eastern North America, from southeastern Canada to the Gulf of Mexico, east of the Great Plains.)
But either way it sure is pretty wood. Now I gotta go turn some of mine.
John