In March 2017, a success story began - the first editions of our international postcard series "Happy Postcrossing from" aka HPC were launched. We dedicate these cards to countries, some countries already several editions, regions, sometimes a special city, seasons and special occasions. After almost exactly 5 years we celebrate the 100th issue of a HPC postcard - with an anniversary edition! Who could have guessed this? We are happy to celebrate and invite you to join in.