Does anyone know a special character that appears to be an upside down check mark? It's for a Cisco VPN login password screen, running on an XP box.

I have a handwritten password and part of it is an upside down check mark. I checked with the person I got the credentials from, and was told that's exactly what it's supposed to be, but they don't know what it is and have never seen it before. Not sure if it should indicate some sort of unseen character, like the "b" looking space character written by hand, or what.