Hi all, I came across this book in a collection I bought.

It is a platinum copy of Superman #75 without the serial number on the back cover.

Any insight to the value of this book?

After doing some research I have only found one other example of a platinum book with this error which is signed by Dan Jurgens and Brett Breeding graded CBCS 9.6 (old CBCS label).

https://forum.cbcscomics.com/topic/10436/cool-one-of-a-kind-cbcs-96-ss-superman-75-platinum-edition-error/

I have found other error books in the past that I have been able to sell for significantly more than their regular counterparts (double cover variants). I am trying to gauge the value/potential interest for this one.

If anyone has any insight or advice I would appreciate it.