Sables are a really difficult morph to identify. That being said, it does look similar to the Sables I've seen.

Sables have a unmistakable velvety/glossy/iridescence look about them. They are almost like the "shiny" morph of the Ball Python world.

The dealers reputation should tell you more than anything.

Here are two examples. Nerd describes the morph very accurately, better than I ever could.

http://www.newenglandreptile.com/ner...ll-python.html

http://www.acreptiles.com/pythons_ball.htm