[silver, cupro-nickel]		[industrial carpet stitch, hardwood]

Since the weight and size are finely balanced, the Peace Dollar — predecessor to the Eisenhower variety — should fare well when rolled at a splendid surface like the spiraling ramps of the Guggenheim. This would be an interesting matchup. The coin should be able to handle its own for a considerable amount of time before the surface takes hold of the momentum.