The fourth postcard comes with quite a bit of explanations. All the prices of all four postcards need to be collected, en the sets of two prices need to be pasted together.
This needs to be done in the following manner:
Latitude: – xx.xxxx
Longitude: -xx.xxxxx
The coordinates refer a a place somewhere on earth. A place we wanted to go a long time ago, but we never did. Will this be the occasion where we do realize one of our dreams?