Serie Extra is a comic book series published by Hispano Americana in Barcelona, Spain in 1950. The series ran for 20 editions with the Phantom appearing twice, in editions 7 and 19.
The Serie Extra series are published with black and white internal pages, with full color seen on the cover, and blue print on the back cover. Edition number 7 contains 36 pages and edition number 19 contains 28 pages. Comics in this series measure 17cm x 24cm.
We can see the covers for all 20 comics below, with comic book characters featured in the series including Tarzan, Rip Kirby, Mandrake the Magician, Flash Gorgon, Kerry Drake, The Lone Ranger and more.
The 2 comic books that the Phantom is featured in can be viewed below.