Members of VANK (Voluntary Agency Network of Korea), a non-governmental cyber diplomatic organization, show off a memorial stamp depicting Korea`s easternmost islets of Dokdo at the group`s headquarters in Seoul on Wednesday, a day before Dokdo Day. Designed by the Korea Post, the stamp has a lighthouse, a mailbox, a shaggy dog, a sea lion and a black-tailed gull that all symbolize Dokdo.