Tashi Mannox wore the robes for sixteen years, and now is a practicing fine artist in the United Kingdom. He is quite famous for Tibetan and Sanskrit calligraphy, and is in fact a master of several different forms. He is also well known for designing and manufacturing the finest Tibetan seals. He doesn't explicitly say so, but I know he has done seals for Trungpa Rinpoche, and numerous other celebrated individuals. He is one of the few people in the world who can work in Horyik, which is the specialized 13th century Tibetan-Mongolian script used for seals. He takes private commissions, so why not investigate?