*Marvel: Marvel Super-Heroes #12 saw the debut of Captain Marvel, a warrior of the spacefaring Kree Empire who masqueraded as a human on Earth. Actually conceived as a copyright-protecting exercise (Marvel’s lawyers had recently seen off a short-lived ‘Captain Marvel’ from another publisher), Mar-Vell’s genesis may have been a bit less than sincere, but his impact remains enduring in the Marvel Universe, especially his participation in the cosmic events initiated by Jim Starlin later in Cap’s own series. These two issues present not one, but two Captains’ debuts: not only Mar-Vell in #12, but Carol Danvers – later Ms. Marvel, occasionally Warbird or Binary, and fifth holder of the Captain Marvel title – made her first appearance in #13 as part of Mar-Vell’s supporting cast. 
PICTURED: MARVEL SUPER-HEROES
#12 FN+ £90 Nice glossy copy with minor corner blunting and minor handling wear at spine. Firmly bound with glue and staples; supple white to off-white pages. 
#13 GD/VG p £50 Pence stamped. Reasonable copy with good colours. Reading crease at spine breaks colour. Long diagonal colour-breaking crease across bottom right corner. Short tear at centre right edge. A fair bit of edge wear breaking colour. Nice white to off-white pages.