Ruger Letter of Authenticity

I am not sure if anyone here is interested in this or has done it, but I have gotten Letters of Authenticity for the Ruger guns I own. They may not mean much now but I ain't getting any younger and figure they may mean something to the family in another 10 or 20 years. They are inexpensive enough now that I figured it was worth doing.

https://ruger.com/pdf/letterOfAuthenticity.pdf