Whiteware?
yes
hachure?
no
yes
no
unknown
yes
yes
90º?
solids?
no
yes
Pureco B/W
(1000-1175)
checkerborad
squiggly lines?
w/ parallel
lines?
no
no
Reserve B/W
(1100-1200)
unknown
Pureco B/W
(1000-1175)
line spacing smaller
than line width?
no
yes
yes
Tularosa B/W
(1200-1300)