Looking for some help to sell my collection

I'm pretty sure this doesn't violate the anti-trading policy on boards, if it does I will be sure to delete the thread. I've been out of the game since Kamigawa block hit but up to that point I was very active in the Michigan t1 scene and have a very extensive collection of top cards, full power, playsets of every big unrestricted card, foil/foreign/beta/etc, all the best cards pimped out as best as I could attain at the time. I'd like to get rid of the collection as a whole, it'd basically allow someone to build nearly any deck in t1 minus the additions made to the format from Kamigawa to present, but I realize that this isn't the kind of deal you take down to the local cardshop and ask them about.

What I'd like is anyone who has experience dealing with this sort of thing who could give some pointers on who to contact that regularly deals with this type of transaction or could help out in some way. I could one at a time the cards on Ebay I imagine but I'd rather keep the collection together since I put alot of time into building it and it really has a larger appeal as a collection rather than individual cards.

Pre thanks for any help that can be given and again if this violates site policy I'll surely remove the thread, I don't intend to misuse the board in any way.