Not all museum items will be made available in fact on some shards they should not be touchable at all as individual shards have requested they be left intact or moved to a new location to preserve history.
I also feel that items like ladders, clothing, benches, tables, ect may not gain in value as much as some other items b/c we already have those graphics available to us, and you cant tell the difference unless you mouse over them.
I personally wouldnt pay much for a shirt named rubble, but thats just my opinion on it, items such as the afore mentioned ones could wind up being worth quite a bit, but as I said based on their common graphic I personally would not value them highly.