There are various components on one side of the board. "20x Amplifier" is handwritten in pencil at the insertion end of the board on the component side of the 2108884 IBM 1620 module.
Date
1959
Manufacturer
International Business Machines (IBM)
Identifying Numbers
Other number
2108771
Handwritten in black along the edge of the component side of the board
Other number
7FF7MUL
Handwritten in black pen along the edge of the component side of the board.
Other number
E/C 408050 H
Handwritten in black along the edge of the component side of the board
