I have several beverage vouchers that I received from UA:
blueish ones from 2004/2005 1K and old ones in yellowish
gold (?) from 2001 ? 1K.

As for the yellowish ones, I checked their expiration dates
and found none.
Could I still use them ?
(I've tried calling UA MP office but I'm lost in a maze of
automated response system...)

Also, could I use old "Service Recognition Certificate :
then-called 'Service in Every Sense' " ?

I appreciate if anyone could let me know...