A couple of things:
PG split 2 for 1 in 1992, 1997, and 2004. Depending on when you actually got the stock (did you get it before June 1992?) you will either have 320 shares or 160 shares today.
PG has been paying dividends every quarter since you received the shares. Have you been getting the dividend checks? If not, it would be very much worthwhile to track them down. You could have a couple of thousand dollars of dividends coming to you.