From the art drawn by MIKE SEKOWSKY. JUSTICE LEAGUE OF AMERICA #37 cover. Black ink on a clear mylar type transparent sheet. Production Art size is approx. These images were taken from the Original Artworks and used in the production of the comics years ago. Now the processes are mostly done on computers, so these pieces do not exist for newer comics. I personally collect Original Comic Artwork and have done so for 40+ years. It eventually became nearly impossible to get the Silver age Covers and Splash Pages, and when you can they run into the tens and hundreds of thousands of dollars each. Please refer to pictures for more description and feel free to ask questions. This item is in the category “Collectibles\Comic Books & Memorabilia\Original Comic Art”. The seller is “colbystreetartandantiques” and is located in this country: US. This item can be shipped worldwide.