I have the one TWVAMAN sent me. Pm your email address and I can send that file. I haven't created anything custom
Related to certificates for bog oak pen blanks:
I sent the PM and @RVA_Tyndall was kind enough to send me a copy of his file, which is the same one that I got from the seller. I didn't realize that the last page was intended as a certificate. It has a "watermark" image of green tree rings in the background. It looks like someone copied the texture of the paper, too. Here is the text from the certificate:
"Dendrochronological Dating Certificate
from the Dendrochronological
Laboratory
Queens University Belfast
"Site Name: Derrycanan Bog, Co. Roscommon
Laboratory ldentification: Q11944
Date of Measurement: 13th March 2017
Number of Measured Rings: 168
Submitted by: Michael Hanley
"Dendrochronological Date:
The Measured Tree-Ring Series Dates from 4663BC to 4496BC
The Estimated Death Date for the Tree will be 4464BC +/- 9 years or later
"David Brown
School of Natural and Built Environment
Queens University Belfast
Belfast
BT7 lNN"
With no disrespect intended, a botanist might appreciate that certificate, but not my spouse's 85 year old aunt of Irish heritage, who is the intended recipient of my first bog oak pen.
I had hoped for a small card, like the ones that come with Bethlehem olive wood. The card would give a simple description, not technical, and have an artistic, decorative border. Maybe a few graphic icons of Irish symbols. Something tasteful; definitely not images from the Lucky Charms cereal box. :-(
I found several images from web searches. Here is an example for bog oak wood from England. It could serve as a template to make your own for Irish bog oak:
After finding a few online images, I think I have enough ideas to make my own cards for my pens. If I come up with something really good, I'll post it here. Otherwise, start with a web search and good luck!
Special thanks to RVA_Tyndall for sending me the file!
P.S. You can find Derrycanan Bog on the map:
https://www.google.com/maps/place/Derrycanan+Bog,+Co.+Roscommon,+Ireland/
If you zoom in from the satellite view, you can see how they are harvesting the bog oak around the perimeter, near the roads and other access points.