Smell those hops . . . just stick your whole darned face in there and snort away. One of three things will happen:
1) They'll smell wonderful & you should use them as you would any other hops with the note that they are of unknown strain. Make a mystery IPA.
2) They'll have little smell to them but the scent that is there smells fine, then treat them like old hops & use them for a lambic.
3) They'll smell "funky" or slightly moldy/skunky & you should toss them before you've ruined a hard earned batch of beer on them.
Trust your nose! If they smell fine, they are fine.
Currently On Draft: Bamberger Rauch Dunkel, Belgian Blond, Pilsener Urquell clone, Smoked Porter
Bottled: Concord Pyment, Mi'Apa Sparkling Mead, Chimay Blue, Old Simcoe American Barleywine, Old Cantankerous
Fermenting and Conditioning: Pseudo-Decoction Munich Dunkel, Left Hook Bitter
Recently Kicked Kegs: Fresh Hop Pale Ale, Citra Rye IPA
On Deck: Old Rasputin, Northstar IPA, Ur-bock Dunkel