8th July 2017 - MailRail
Limited Edition: 12 copies Worldwide.
Notes: Sopnosors of railway sleepers for the new National Postal Museum attraction were invited to 'walk the rails' on 8th July 2017 as a special thank you. This edition is limited to only 12 covers and were produced in haste to qualify for the special postmark - hence the cover quality is not up to my usual standard.
Why not take a look at other items on a similar theme?