The bulk of the collection is loose Transformer aren't transformers unless there transformed and a good many of my g1 (Japanese and European ) were purchased with opened boxes so they are being enjoyed by being freed from there cardboard prisions the way they were suppose to be youve all seen toy story right "LOL"
Depends but in general.
Henkei, classics, universe, generations - opened
Masterpiece - opened
G1 from childhood - obviously opened
G1 and reissues - sealed
Limited edition or rare figures - sealed for value
I don't plan on selling my whole collection, ever. Maybe bits and pieces some day. But I am pretty much keeping everything to be buried with me in as many coffins as it takes.
So they are displayed out of the box. ...how else will they fight?