...Sad Sack comics 1960's

Sad Sack was a cartoon character invented and drawn by the American cartoonist George Baker (1915-1975). Baker did not however write the stories that he illustrated. The name Sad Sack was a shortened version of a then common, and mildly rude, phrase referring to an inept person or american soldier. (See the Wikipedia link below for more information).

The comics were imported and sold in the UK for 9d, that is nine old pence. But if memory serves me correctly, they were not available in mainstream newsagents, such as W H Smith, and one had to search them out, as one did the DC comics featuring Superman, Batman, the Flash etc.

Here is a typical example of Sad Sack's exploits.

 https://en.wikipedia.org/wiki/Sad_Sack