I always have one open and one boxed of everything. I have one, and the priority is to keep is boxed first, and open a second one if I can get one. I don't care how much it degrades the value. I tore a Sio Bibble, Holo Sidious, R2 w/ Holo Leia, and other 'rarities' off their cards once I got the doubles, so I would treat the Han Tauntaun the exact same way.
Barada