2. Anyone wishing to have an item stamped with the commemorative postmark should post it to the Philatelic Service, 100 Aiolou St (second floor), 10 188 Athens, Greece, no later than 10th December 2021. Please note that the postmark stamped by the post office from which the item is sent will indicate the date of posting. Philatelic items to be postmarked must bear the name and full address of the sender so that they can be sent to them.

3. Stamps to the value of at least €0.90 must be affixed to each item to be postmarked. Any item to be posted must bear the appropriate stamp(s) for domestic or international mail or special delivery service, as the case may be.