Call of Duty Precinct #1 Mark Brooks Sketch Cover. Here is the Call of Duty the Precinct #1 Canadian Con Vairant Blank Sketch Cover. This blank cover has been drawn on by legendary creator Mark Brooks. Great sketch of Black Cat by Mark. This book has also been certified and authenticated by CGC / JSA with the grade of 9.6 Signature Series. No cracks or dings on the case. CGC / JSA label notes white pages. Any glare in the image is from my camera. Please check out my other items for more comics! CGC cases may contain Newton rings. They occur from light refraction when the plastic inner well touches the outer plastic holder. Some CGC cases will then have what appears as “oil” slicks when held at certain angles. This is part of the CGC encapsulation product. We cannot control when or where the Newton rings may occur. For more information please google CGC Newton rings. The grade of 9.6 was issued by CGC. For more information please google name. As the book has been graded by a professional company, there is not much more to say. This book is graded by CGC so it is their opinion. This will save us all a lot of time.