A letterbox is another form of treasure hunting using clues instead of coordinates. In some cases, however, the owner has made it both a letterbox and a geocache and posted its coordinates on Geocaching.com. If there is a stamp inside a letterbox hybrid, it is not an item intended for trade; the stamp is meant to remain in the box so that visitors can use it to record their visit.To read more about letterboxing, visit the Letterboxing North America web site.
Anyway, since this was my first letterbox I had to find a stamp. It's nothing I personally designed but if you know me outside this blog - the stamp will make sense.
It will be my stamp for future letterbox finds, so be on the lookout!