Malaysia Stamps - Caves in Malaysia - August 22, 2019 Issue

Nice set of cave stamps of Gua Kelam (Perlis state), Gua Tempurong (Perak state) and Gomantang (Sabah state) and miniature sheet of Gua Niah (Sarawak state) with a cave outline cut out hole. Cancelled these First Day Covers in Penang main post office.