Official IUOMA postage 25 years celebration. on December 26, 2025 Artistamps IUOMA IUOMA Postage Litsa Spathi Mail-Art Netherlands PostNL Ruud Janssen +
Artistamps by Wacky Stuff on November 23, 2025 Artistamps Breda PostNL Ruud Janssen USA Wacky Stuff +