The dial is reminiscent of the pattern found on Law's hat.
Next to the index at the 6 o'clock position, a mark is designed hinting at the "D".
The crown is marked with the pattern on the scabbard of Law's favorite sword.
The case back features the mark of Corazon, Law's words, "I'm fulfilling someone's long-held desire!!", and a serial number from 0001/5000 to 5000/5000.