The Lunar Portrait is based on the unchanging repetition throughout time of lunar cycles; any past or future date can be linked to one… and only one… particular lunar phase. This feature of our satellite, with the addition of the recipient’s initials as well as the unpredictability of the sign and oxidation, ensures the uniqueness of each piece, even if made using a single pattern.
Helpful Link:
https://sites.google.com/site/acul74/
https://www.flickr.com/photos/lucamaggi/