pinnerup at 2024-01-27 22:33:13+00:00 ID: kjv9fpk
A new Postal Code came into force on the 1st of January 2024. This means that the special status of PostNord (formerly PostDanmark) is abolished and that older stamps are no longer usable for sending letters within Denmark.
Older stamps can still be used for sending letters out of Denmark. So your old stamps shown above can theoretically still be used to send letters abroad from Denmark.
However: Sending a standard letter (up to 100 grams) from Denmark abroad now costs 50 DKK (yes, this is mind-bogglingly expensive). That means that it'll take 100 of the old stamps shown above to send a standard letter abroad from Denmark.