Need help identifying Case XX knife handles.

[Captvideo]

4 dot Case XX #6205R 2 blade one arm barlow.
It appears Handles are clear acrylic with shell chips embedded. Maybe abalone and pearl? Pretty cool in the sunlight.
I searched online but can’t find another one like this, and a Case box missing the label.
Any info?

 

[Arathol]

Handles not original.....pattern number is 6205R, the 6 referring to jigged bone, wood or Delrin. Pearl or abalone would be 8.

 

[Captvideo]

WOW. No wonder I could not find any info. I never thought of custom handles. Thanks.