DOOM – FANTASTIC FOUR – OIL PAINTED SKETCH COVER by Kai Lun Qu CGC 9.4. These are hand oil painted comic book sketch covers. Each book is a one of a kind original piece of art on the cover of a blank comic book. Each comic book cover is gessoed to prevent the paint from damaging the comic. Kai Lun Qu is a well established oil painter, trained in the classic style of alla prima painting techniques which is wet on wet paint application. This book has been certified by CGC as a 9.8 Signature Series. All items are guaranteed authentic unless noted.