'Quicksilver' from National Comics #47.
William Quackenbush was a Golden Age comic book artist, who worked mainly on titles for Quality Comics. He did art on features like 'Atlantic Patrol', 'Espionage', 'Phantom Clipper', 'Quicksilver', 'Rusty Ryan', 'Sally O'Neil', 'Secret War News' and 'Spin Shaw', all between 1944 and 1946. Earlier, in 1943, he worked on the Hillman features 'Airboy' (inks) and 'Iron Ace'.