This is a lot of two stone manos that were found in the Nayarit area. One has a collection number from when it was found. The other one has an auction tag from when it was purchased. These were made by the Nayarit Culture of western Mexico and dates to 300 BC to 300 AD. Nayarit was one of the Shaft Tomb Cultures that included Nayarit, Colima, Jalisco, and Michoacán. These are guaranteed to be ancient and display nicely. Free shipping in the continental USA