Bad TI IC sockets
TI made some bad IC sockets back in late 1970's. They are easy to identify since they grip the IC pins along the edge of the pin and not the flat body of the pin. A typical high quality replacement would be a Mill-Max machined pin DIP socket. For gold pin DIPs like many of the Tektronix custom ICs, one would choose a gold internal contact plating and for other early non RoHS lead-tin plated ICs a similar internal contact plating is available from some suppliers.
For the 14 pin DIP at the left, a gold part number would be mill-max 110-93-314-41-001000, a non-RoHS lead-tin part number would be mill-max 110-99-314-41-001000. Both parts are non-RoHS since the solder-tail (PCB end) is also lead-tin plated.