I have some used Buffalo Trace Bourbon barrel wood pen blanks for sale. These were cut from the actual barrel used to age the bourbon. The one side of the blank is the dark outer surface which was against natural air, the opposite side is the charred side which the bourbon was against inside the barrel. The blanks are roughly 3/4 x 3/4 x 5 inches. Each blank will include a card certificate stating the history of the wood. The pen in the pictures is just to show a finished product with these blanks as well as the picture of the COA. The pen was turned by Mike Sweatt.