Flash Gordon D-2 Series Strip
Art: Dan Barry
Summary: Setting course for Earth after their latest adventure on Mongo (see D2-132 The Dark Seed), Flash, Dale and Zarkov are hit by bad weather and forced to land at one of Earth's Polar Spaceports, where they recount a previous polar adventure involving the dreaded Skorpi and a mighty character from a distant past.......
(Source of summary: www.ipcomics.net)
It's from Emile's e-collection. All credits go to her & "Allen Lane" who scanned and first shared at net.