Here is a simple and beautiful (due to the site I link to, not to my prose) solution:
- In Word 2003 (sorry, I don't know if it works in other versions), put the cursor after one of the characters and press Alt-X.
- You should then get a four digit number, like 12E8.
- Go to decodeunicode.org and run your mouse over the line of colons near the top of the page.
- What you're looking for it to say a range of numbers after the "U+" that includes the four digit code you found above. Then you may get a link to a font you can download to display that text.