First off how many idems are in your collection? The bigger auction companys would maybe pickup the collection or have a auction near you. I would contact Dan Matthews about this & he could line you down the right path. Plus you would get good money out of your idems. Here is his contact info-
Matthews Auctions, LLC.
111 S. Oak St.
Nokomis, Il. 62075
Toll Free: 1-877-968-8880
Hope this will help you. Good luck on your sale