5 1/4" x 3 5/8" Notched Michigan Butterfly Bannerstone - Banded Slate. Ex. Ramp # O-184.

5 1/4" x 3 5/8" Notched Michigan Butterfly Bannerstone made from beautiful Banded Slate. Purchased by David Ramp at the Johnson Auction 4/28/84 as lot 187. Ramp's catalog # is O-184. From the collection of David and Josephine Ramp.