@GregorGizeh @Sxan Old English (and current Icelandic) letters. English had these until we bought printing presses from the Germans, who lack these sounds.
þ represents unvoiced th, ð voiced ð.
So, more logical spellings than the bodge of "th" for both.
So why not?
@Sxan Immaculate reasoning. Can't fault it. Well done. 😁