Understanding the Bullseye code system
   
The 4 digit based indicates the glass colour:
   
0xxx Solid colour opal
1xxx Solid colour transparent
2xxx 2 colour streaky
3xxx 3 colour streaky
4xxx Collage glass
6xxx Ring mottle
 
 
The 2 digit suffix in SHEET GLASS indicates surface treatment, texture, and/or thickness:
   
-00 Single-rolled 3mm
-12 w/patterned irid
-21 Soft ripple
-22 Herringbone ripple
-25 Herringbone ripple irid
-30 Double-rolled 3mm
-31 w/rainbow irid
-37 w/silver irid
-38 w/gold irid
-43 Reed texture 3mm
-44 Reed irid
-45 Accordion texture 3mm
-46 Accordion irid
-47 Prismatic texture
-48 Prismatic irid
-50 Thin-rolled 1.6mm
-51 w/rainbow irid
-53 Thin reed
-54 Thin reed irid
-55 Thin accordion
-56 Thin accordion irid
-57 Thin silver irid
-58 Thin gold irid
-60 Single-rolled 6mm
-83 Tekta Clear 3mm
-86 Tekta Clear 4mm
-89 Tekta Clear 6m
 
 
The 2 digit suffix in NON-SHEET glass indicates glass form or shape and respective packaging.
   
-01 Fine frit in 5 lb jar
-02 Medium frit in 5 lb jar
-03 Coarse frit in 5 lb jar
-05 Extra large frit in 5 lb jar
-08 Powder frit in 5 lb jar
-04 Confetti in 1 lb jar
-07 Stringer 1mm
-09 Sizzle Stix, mixed colours
-65 Billets
-66 Casting & blowing cullet
-71 Sizzle stix, rainbow
-72 Stringer 2mm
-76 Rod
-84 Confetti in 4 oz jar
-85 MiniMix confetti in 8 oz jar
-88 MiniMix confetti in 2 lb jar
-91 Fine frit in 1 lb jar
-92 Medium frit in 1 lb jar
-93 Coarse frit in 1 lb jar
-95 Extra large frit in 1 lb jar
-98 Powder frit in 1 lb jar