The chronology of these pens spans from the early 1900's to 2014. The Douglas-fir tree used to make this pen had sprouted in Western Montana in the early 1900's. In 2014 the tree was harvested as part of a forest restoration project. The pen can be customized with dates or initials to make the perfect commemorative gift. Year(s) of special significance inscribed on the pen will correspond to the year the wood formed in the tree that became the pen. http://www.treeringpens.com