Ogham Set - Braille
Ogham is the alphabet of early Ireland, dating back to about the second century CE. Each disk has a single letter on it (similar to the Old Norse Futhark), but each letter is a mnemonic device, the most common of which is to ascribe each letter to a tree, and so this is often also called the "Celtic Tree Alphabet."
The ogham are burned in reverse onto 2" tall pieces of wood, with the name of the ogham in Irish or the tree name in English in raised Braille to its right, going up the side of the piece. You can select English or Irish tree names as an option.
Pictured ogham are on pre-finished red alder, 1/8" thick.