[time-nuts] Source for DC power connector on HP 5061 and 5065?

[John Ackermann N8UR]

Subject line says it all... I'm looking for the DC input power connector
used on the HP 5065A Rb and 5061A Cs standards.  Finding the
manufacturer/part number would be great; a source would even be better
(a source giving them away for free would be best, but I won't insist on
that :-) ).

Thanks,

John