EDIT: Sold to Testament ... you can delete this, mods. Thanks!
I have an extremely nice copy of Double Dragon II for the PC Engine Duo/Turbo Duo without a spine card. Condition overall is excellent with no scratches on the CD and the case and manual are excellent as well. The game itself plays flawlessly.
My trade list is located under my username and under the Want List section. Anything on the list is fair game; go ahead and toss a PM my way if you're interested in trading or think what you have to offer is worth it. I am interested only in trading at this time ... sorry!
I do have some feedback in the Feedback Forum, and on eBay as well, under the username nickdhhh.
Thanks for looking and please let me know if you have any questions!