there have been 3 versions of price guides for dice. the oldest is now long obsolete, i believe the author was jeff laudner (sp?) (deceased) rick olsen, (deceased) did one and it was revised subsequently! the club probably has a copy in its library that you can get for use from the club librarian. i have the second and third versions. if you can send me a scan of the dice to my email i can give you a relative value!