Counsel for the Defence is certainly the most famous Jeff Hawke story and is considered by many critics and fans to be Sydney Jordan's masterpiece and indeed a masterpiece of the SF strip in general. Here's an excellent example featuring Kolvorok getting his orders from the Galactic Police Chief.
Counsel for the Defence is reprinted by Titan in Overlord and in Jeff Hawke's Cosmos V7 #2
Board size is about 16.5 x 5.5 inches with an image area of 15 x 4.125 inches. Whiteout for effect.