Here is a postcard for Philacon '92, the Second National Philatelic Convention, held at Cebu City from October 22 to 24, 1992.
On the back is a stamp cancelled with a Philacon '92 slogan cancellation dated October 9, 1992, the 15th anniversary of the Philippine Philatelic Auction Club. There are two signatures, most likely PPAC members. One is that of (my guess) Carlos Inductivo (who conducted the "grand auction" of Philacon '91).
The slogan's message is delightsome: Happiness is Collecting Stamps!