有几位学生遗失了一些物品，请根据以下信息为他们写完寻物启事的布告。
Peter: I lost a gold watch. If you find it, call me at 680-7432.
Jim:  I found a computer game. My phone number is 512-8843.
Henry: I lost a set of keys. Who found them, please call 476-3539.
Sam:  I found a notebook with the name “Kenvin Clark”. My phone number is 555-0287.