There are Unicode characters for
- flat (U266D) ♭
- sharp (U266F) ♯
- natural (U266E) ♮
But I couldn't find characters for double flat and double sharp (at least not in the character map program I'm using).
Are there Unicode characters for double flat1 and double sharp2?
1 Other than just two flat characters together; ♭♭ doesn't look quite the same as the double flat in the image.
2 Ditto for double sharp; a bold "x" just isn't the same.