This is a B137 module with a green board and a blue plastic extraction handle, attached by two rivets. Between the rivets the words "FLIP CHIP" are visible. The component side is marked by four inspection stamps. "Inverter B 105 D" is printed on the solder side.
Date
1966 ca.
Manufacturer
Digital Equipment Corporation (DEC)
Place Manufactured
Maynard, Mass.
Identifying Numbers
Model number
B137
Stamped in white on face of extraction handle.
Other number
316B
Stamped on reverse of extraction handle between manufacturer and place made
Other number
4-73P
Printed on solder side of module parallel to lefthand edge