Max the 2000 Year Old Mouse was a series from 1967 and produced by the same folks who brought you The Marvel Super Heroes and the classic Spider-Man cartoon, Gantray-Lawrence Animation as well as Steve Krantz thru his studio, Krantz Films It has over 104 episodes produced, mostly all of them are lost with 2 episodes recovered (the one above being one of them)
It would be nice if we recovered this forgotten gem as it was last seen on ITV (UK) in 1992
I saw the other found episode on YouTube a while ago and was appalled by the dismal production values. It's amazing that cartoonists were able to get away with such laziness back then. It reminds me of how the "Nutty Squirrels Present" cartoons had nothing to do with the titular characters, but at least in that case they were still fully animated.