These are Baguette Boards, meant to hold a long, skinny loaf of French Bread. Black Walnut is 24" long, 3.5" wide; Maple is 26" long, 4" wide. They were made like a 1-ring bowl with a 30 degree angle cut. Just the inside oval cut was made - the outside was left rectangular. After sanding the inside and gluing on the bottom, a table saw was used to trim the outside to a 30 degree angle. To me, that makes it look like a continuous side wall, as if the bowl was gouged rather than assembled. They were given 2 coats of shellac, then paste waxed with 0000 steel wool.
I've seen some of these with cuts through the walls to guide a knife, but I think the bowl shape will hold the crumbs better.
The penny is a 2013, to mark the year (Thanks Triple-B - that's a nice touch).