It´s not that I consider I’ve seen it all, but there are some simple things that still amaze me.
I got today a standard 1923 postcard with 12 centimos franking consisting in the never-ending issue of 1910 (one of my less favourite if not the one I dislike the most). So why did it buy it? you may ask. Easy answer: because it has a cachet I have never seen before.
It consist in a triple ring cancel that reads: CAPITANIA DEL PUERTO DE LIMON *COSTA RICA*. Can this be considered official mail? I don’t think so, but it is still interesting.