I'm not sure which convention chip images you are in need of so this is a search for all that are available.

http://www.themogh.org/cg_home2.php

On the ChipGuide Home Page click on Casino Search in the left side bar:

Type in CC & GTCC Convention in the Keywords bar and click Search:

It will take you to this result:

Click on the links pertaining to what you need.

Hope this is what you were looking for?