How old should a new BFG tyre be

There are no BFG ATR's in Syd to fit my Pajero (265 x 65 x 17's). So dealerships are bringing them in from interstate or country places who still have stock. The shortage may be due in part to the Giveaway of a @300 Black Max compressor with purchasing BFG's

But given there have been comments in this forum about tyres blowing out thru' sidewalls because of tyre "old age" regardless of k's travelled, how old should a new tyre be when you buy it new ? Does the tyre have a date of manufacture imprinted somewhere on the tyre ?

Also I would think the environment in which it is stored might be helpful to know ? Presumably somewhere out of the sun would be good ? but how do you know how they've been kept if the tyres are transferred from interstate to Sydney ?

The dealerships say there the new shipment is due on the 20/06/10. GREAT, we leave for a months holidy out west on the 24th. Do I wait for them or buy the transferred ones from interstate. Need your opinions quickly. Thanks very much Greg