(The indicated First Day Covers are preliminary samples, the originals may differ slightly from the picture).
First day covers for the “2021 World Heritage – Bridges, Waterways, & Railways” stamps will be available in the following versions:
- Single – a total of six envelopes, each with one of the values issued, appropriately cancelled
- M.I. Block – a total of six envelopes, each with a block of four with M.I. of the values issued, appropriately cancelled
- Combo – a total of three envelopes, each with the two values of each denomination, appropriately cancelled
- Triple – one jumbo size cover with all six UN stamps issued, appropriately cancelled by the offices in New York, Geneva and Vienna