[bluecuracao]

I bet there are more of tablets--maybe they were used in a mail system.

From another story:

At 5 inches thick and 26 pounds, the tablet is far more hefty, but still portable.

The face is smooth and slightly concave, which suggests it may have been worn down in antiquity as it was inscribed and erased multiple times, Houston said.

There is little hope of deciphering the meaning of the text. The small size of the block and the faintness of the inscription imply the text was not a public document, but instead was meant for intimate reading, Houston said.

http://www.freenewmexican.com/news/49240.html