Searching for the name of character

[Kriton Kyrimis]

RICH:

 > He was featured in strips shortly after the Donald and Donna Duck serial
 > comic strips.
 > ...
 > I have forgotten the name of a fairly obscure character (see attachment).

Well, The Donald and Donna installments (not exactly strips) were published in
Mickey Mouse Weekly 67-81. Looking at the contents of the next issue, we see
the beginning of a new story, called "A Very Fishy Business"
(https://inducks.org/story.php?c=U+MMW++82) where a character called Mac
(https://inducks.org/character.php?c=Mac+the+sailor), similar to the one you
describe, appears. So my guess is that this is Mac.

Kriton.