This BCC-500 Discrete ROM board is 64 microcode words x 90 bits wide. There is a stiffener at one end near the double sided connector with a total 136 pins.
Identifying Numbers
Other number
CPU#22
Handwritten in black on the board to the right of the component side near the insertion end
Other number
NE00016.1-1
Printed in solder to the right of the component side near the insertion end
Other number
NE00016.1-2
Printed in solder on the solder side on the left
Other number
NE00126
Scratched into the board to the right of the component side near the insertion end