ZCM-1490
Introduced at Christmas in 1987.
ZMM-149A
ZVM-122A
Introduced at Christmas 1983.
ZVM-1230A
ZVM-133
ZVM-133 appeared in the Winter 84 catalog for the first time.
ZVM-134
ZVM-135
ZVM-135 was introduced in Fall 1983.
Spring of 84 had better detail of the monitor.
