How Do I Determine Adword Coupon Expiration?

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Hi all -

I received an adwords coupon in exchange for some logo work.
I've never used Adwords before.

I'm considering offering the coupon in trade for some other
service, so need to determine the coupons'expiration date before doing so.

How?

I only received a series of numbers to use - no other information.
I'm not contacting the guy who sent it to me.

Thanks in advance.



Anyone?

I only received a series of numbers to use - no other information.
I'm not contacting the guy who sent it to me.

Anyone know?