Fb006 Sister Blue [verified] — Dbm Family Blue 06

—known to the old-timers as "Sister Blue"—was different.

Likely refers to a specific brand collection or design family (Design Brand Management). DBM Family Blue 06 FB006 Sister Blue

It is possible this term refers to a specific product code for a commercial item rather than a scientific subject. Based on common nomenclature for similar strings, here are a few likely categories and where you might find related documentation: 1. Textiles, Dyes, or Pigments —known to the old-timers as "Sister Blue"—was different