Green Lantern #7 (1961) CGC 7.5 features the origin and first appearance of Sinestro, one of the most important villains in DC Comics history. This Silver Age key issue introduces the future leader of the Sinestro Corps and longtime adversary of Hal Jordan. With art by Gil Kane and Joe Giella, this book is a cornerstone for Green Lantern collectors and DC key issue investors. As Sinestro remains central to DC storylines across comics, animation, and potential film adaptations, demand for this issue continues to grow—especially in strong mid-to-high grade CGC copies.