"Hammer driver" is printed on the front of the module in white. There are three high current power transistors on the component side. "3 is bad" is handwritten on a paper sticker on the extraction handle.
Date
ca. 1965
Manufacturer
Scientific Data Systems (SDS)
Identifying Numbers
Model number
RK54-1
Printed on the paper label on the extaction handle
Serial number
9535664
Printed on the paper label on the extraciton handle
