Ugarit Alphabet Tablet archaeologist Claude Schaeffer

I have a blue velvet box with a stone in it that looks like the Ugaritic Alphabet Tablet and a gold colored plack that reads:  L'abecedaire d'ugarit, xiv's. av.jc. decouverte Par prof.cl.shaeffer    Can you give me any information about it? Thank you

The Ugarit clay tablets are to be traced back to the first alphabet.

http://en.wikipedia.org/wiki/Ugaritic_alphabet
http://en.wikipedia.org/wiki/Ugaritic_clay_tablets

The first scientific excavations of Ugarit were undertaken by archaeologist Claude Schaeffer from the Musée archéologique in Strasbourg in 1929.