When I think "weird special English letter" I think Œ, as in fœtus. Granted, in American English it has been eliminated almost completely and even in British En

When I think "weird special English letter" I think Œ, as in fœtus. Granted, in American English it has been eliminated almost completely and even in British English it's now often seen as a bit archæic (pardon the pun) but it's still there and to me signifies "English" just as ß signifies "German", ø signifies "Nordic", ı signifies "Turkish" and é signifies "French".