iserith
Magic Wordsmith
Making it difficult to identify magic items can be quite enjoyable in a game (like 5e) where most people aren't going to be playing with a lot of permanent items. If each item is special, then it's worth a bit of effort to figure out the puzzle of the mysterious gauntlets. It could even be an adventure in its own right.
My experience over the years shows that the players unceremoniously chuck the items into a sack to be identified later when they can spare the time or get access to the spell. The "mystery" in this case just effectively delays the players opting to use the items in play, even after they've rightly earned it. There's just no payoff for this identification process in my view.
Of course, your solution of giving known legends regarding particular items is a pretty awesome way of doing it too. The only time it doesn't work that well is if the item is supposed to be mysterious. Or if there are a lot of these one-of-a-kind items and everyone seems to have them memorized (but maybe wizards learn that as part of their standard education).
I like to imagine that knowledge of magical or otherwise exceptional treasures is something adventurers have being that it's a common goal for adventurers to seek out and gather loot.