guys, thanks for the replies.
The wallet is Mycellium ver 1.3.3 that i DL in 2014.
The key pasted above is actually the encrypted private key (not address), and then to protect it further, they gave me a password to decrypt the key. I have tried creating the QR from the key above and scanning it with the new mycelium app but it said "format not recognized." also, my address is only alphabet letters, but the example of encrypted key from this link here has also numbers.
https://support.mycelium.com/hc/en-us/articles/207045495-What-about-previous-backups-Do-my-old-ones-still-work-