I posted this on the Azo Forum as well but thought it might reach more eyes here...

I've just begun working with a 6x6 mf camera and as such picked up 3 - 500 sheet boxes of 2 1/2 in. Azo. I'm wondering what age it is, I can find no date on the boxes though I haven't opened one yet.

The following is the info from the box:
Kodak Azo Paper
Cat 141 7831
Single weight
I'm guessing the numbers below are for the emulsion...? Two boxes have the same number, one box is different.
01302-73574V PD
03904-73192P DD

Any ideas of the age or where I might look? As long as it prints well I suppose it doesn't matter but I'm curious none the less.