I just wanted to report a successful consignment I had with Rockhurst auctions. They sold an Elvis autograph for me in August. The price achieved was good, the service provided by Jeff Marren was great, and he went over and above with item. 
I believe I heard of them through an advertisement on this site and am glad I reached out to sell with them. 
I’m not affiliated with them in any way. Just sharing a good experience if anyone has something to sell.