Gottlieb 20-digit fluorescent display glass with 20 terminals (10 + 10) at bottom and 18 terminals (9 + 9) at top of tube.
The glass tube nipple is located at the bottom center of the display tube.
Reference:
GTBDIS20-T
Itron FG209M2
Itron FG2013B
Gottlieb MA-644
Gottlieb XO-840