Hi Pete,
Sorry, it took so long. We were both attending DIV (Diggin in Virginia) and have been out of pocket for over a week.
Brant was kind enough to say they were both found North of Shiloh on property owned by Santana Dredging. He listed the following info
The 2 groove diameter is 2.94", length is 5~11/16" and weights 5 lb 15 oz.
The 3 groove diameter is 3.22", length is 6 1/2" and weights 8 lb 14 oz.
Cheers, Scott