Characters that are likely to work pretty much everywhere, but you can't be 100% sure, and you'll probably do better using the unofficial number codes.

€ € €
‚ ‚ ‚
ƒ ƒ ƒ
„ „ „
… … …
† † †
‡ ‡ ‡
ˆ ˆ ˆ
‰ ‰ ‰
‹ ‹ ‹
Œ Œ Œ
‘ ‘ ‘
’ ’ ’
“ “ “
” ” ”
• • •
– – –
— — —
˜ ˜ ˜
™ ™ ™
› › ›
œ œ œ
Ÿ Ÿ Ÿ
ª ª ª
º º º

 

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