I call it burple lol. It is a 16803LB dial the transitional dial before the 16613LB. In some lights it is blue in some it is purple. Rolex only made them for a short while before the 16613.
You have a hella'va collection. Thanks for showing it off, it's made me start looking at a few more here and there if they pop up on M2M and I get lucky.