This module consists of many DIP integrated circuits, resistors, capacitors, diodes and four (4) switches. The white label on the circuit side says "change #1".
Manufacturer
NCR
Identifying Numbers
Other number
08 18 73
Stamped in black on right side of component side of module.
Other number
095 0301214A
Stamped in black on right side of component side of module.
Other number
095-0300052
Solded at top on circuit side.
Other number
095-0301214 A
Printed in black on white label at top edge on circuit side.
Other number
23-2-399
Printed in black on white label at top edge on circuit side.
Other number
2520
Written in black on white label on top of component side.
Other number
E-40380-1A
Printed in white on right side of component side of module.
Other number
W15A002978
"W15A " is stamped and then "002978" is hand written next to it. This is stamped on the right side of the component side of the module.