Yeaah,secret. ^o^ So,erm,why the heck can Save The Queen be synthetized,if only Beatrix can use it? Is it needed in a quest or somethin’? Or is it just to make us want to us it so badly..? ;_;
SPOILER ALERT
Only the Hammer adds a short bonus scene to the ending, during the play at the end, where Baku’s character, King Leo, executes Blank’s character for betraying Marcus. That’s it. Nothing more. It’s not a true alternaltive ending, but does give some closure to the play though…
As for Save the Queen, all you can really do with it is have Amarant throw it at an enemy, although I suppose you could try selling it at a weapon store, something I’ve never tried though.
I’m not sure, but I think that having it in your inventory may also add towards your ‘Treasure Hunter Rank’ too, but again I’m not certain about that. Other than that, Save the Queen is pretty much a piece of useless junk which only serves to clog up your inventory (after all, this isn’t the first time Square has added a useless weapon you can buy, but can’t use into one of their games – remember the Masamune blades you could win at Gold Saucer in FFVII?).
I wish it had been slightly less useless. I got all excited when I first saw that you could get it, and it was a bit of a let down.