Marvel The Invaders (1977) 5 issues 20-24 keys! G/F

The Invaders from Marvel comics, circa 1977, 5 issues 20-24, includes the team of Captain America, original Human Torch, Sub-Mariner, Bucky and other WWII-era heroes! Ranging from (estimated) Good- to Fine, see photos.  Keys include issues: 20 - 1st full appearance Union Jack II, 22 - origin of Toro, 23 - 1st appearance Scarlet Scarab, 24 - 1st team up of Golden Age Human Torch and Sub-Mariner.