Machiavelli said:
In my mind, objects like this should at least have a chance of detecting as magic, since this most certainly IS a magic item. Other than that, it sounds like a great stealth device.
Unless Nystul's Magical Aura is involved in the creation process.
Assassin's Glove
This the process of crafting this glove includes absorbing into it a full range of assassin's weapons. Three times per day as an immediate action, the wearer of the glove can use a simple wrist flick to cause one of the following weapons to appear in his hand: dagger (any), dart, rapier, sap, or short sword. The weapons brought forth by the assassin's glove have a +1 magical bonus. The greatest benefit of this glove is that it only detects as magic while the weapon is present in the wearer's hand.
The weapon remains for 1 minute and then disappears back into the glove. If the weapon is not in the wearer's gloved hand when the 1 minute has elapsed, the weapon disappears but does not return to the glove. The glove can no longer be used to call forth that weapon.
None (minor transmutation); CL 3; Craft Wondrous Item,
absorb weapon, magic aura, magic weapon. Price: 20,000 (see below).
**** Cost Breakdown ****
Absorb Weapon (SC) = sl 2 x cl 3 = 6 x 1800 (use activated) = 10800
+ Magical Weapon = 2000 (continuous)
+ Magical Aura = 2000 (continuous)
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= 14,800
x 5/3 (3 uses per day)
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= 24,667 gp
+ 35.5 gp (the weapons)
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= 24,702.5
Now technically, the first ability should have had its cost multiplied by 2 but this seems to increase the cost all out of proportion with the item and the other two are more passive abilities (though very important ones).
Using DM fiat, I think that I would probably set the cost of this item at 20,000 gp. That is twice the cost of a glove of storing; this is a specialized version with some added perks.
DC