Hi folks, I will be receiving a CPV of Detective Comics # 583 back from CGC, graded at 9.6, later this week. Based on the census, it is the highest in existence, with no others equaling it. I am planning on eventually selling it, but am in a quandary as to what the value might be. Can anyone suggest any other comparable CPV that might exist that would allow me to gauge an appropriate value? I know that I can always just put it up in an auction on eBay, but the final auction price really depends on who is looking for that particular issue that week. #583 isn't necessarily a huge key that everyone is searching out, but I feel the CPV collectors know that it is a rare book, in high grade or not.
Thanks in advance for any help!