This set of 389 cards was issued by the philatelic exposition Hertogpost, which was held in November 2021 in 's Hertogenbosch, the Netehrlands. Originally the event was scheduled in March 2020, but due to the pandemic it was moved to November 2021. The cards could be collected at different points and at the exhibition itself. The cards are 85x55 mm.
The cards show the arms of all municipalities on January 1, 2019 in the Netherlands, including the islands and municipalities in the Caribbean.