The record contains a board from the Zuse Z23. "+Z-" is printed in the corner on the solder side of the board, and "Elektr. Rev." is printed in white at the top of the board.
Date
1961 ca.
Identifying Numbers
Other number
2198
Stamped in white on the component side of the board
Other number
247BL
Stamped into the board in white on the component side
