Sheet of twenty small $.45 postage stamps with an image of a message in a bottle on a white sandy beach and palm fronds. See matching invitation and envelope. From YouCanPlanAParty.com. See the entire Shipwreck Postage collection in the INVITES | Postage section at YouCanPlanAParty Merch Mart. Learn about planning theme parties in the third book of our Enlightened Party Planner book series Our Favorite Parties.