I purchased this John Hardy 6.5mm Classic Chain and blue sapphire bracelet about 9 years ago and it was signed by Guy Bedarida during a personal appearance at a John Hardy trunk show. “GUY” is signed on the male end of the clasp where the M (medium) size stamp is. Guy Bedarida was a former designer for Van Cleef & Arpels American division, then on to Creative Director and head designer at John Hardy until 2015. Please see pictures for all sizing questions. **I just found the John Hardy Blank Notebook that Guy signed for me when he signed my bracelet; I will also include this**