First viewed as a pre-teen in late 1960's Australia, the memory is still vivid primarily due to the very catchy theme songs for all 5 characters (Cpt. America, Hulk, Iron Man, Sub-Mariner &Thor) - penned by Jacques Urbont.
...""When Captain America throws his mighty shield...""
...""Dr Banner doesn't like gamma-rays..."" etc etc
On re-viewing some 50+ years later, you are mainly struck by how cheaply the animations were put together mainly through static shots copied from the original comic. The lips are then animated during dialogue. Some pan and scanning occurs, and some zooming also. Dynamic animations due occur, but they are infrequent and basic.
If I did notice the primitive animation quality as a child (which I think I did) it obviously carried little weight in my eyes as I was entranced by the story telling and catchy music.
Do not watch if the primitive animation will distress you. I found it fascinating, & an important early chapter in the marvel super hero universe, showing how you can achieve quite a lot with very little.
Fans 7/10
Normal people 3/10 tehehe.