Need helping figuring out this hallmark

[Steve]

SB in Star Hallmark

I just purchased this bracelet from Christibo I love it. Would like to ID the artist. [1a] [1b] [1c] Only info I could find is a similar, but larger inlay bracelet with a similar Hallmark. This one sold a while ago. [example 1] [example 2] [example 3] Does anyone recognize the style or Hallmark? Thanks.