This find is getting even better
I couldn't resist opening up one of the boxes that I'd spotted a tonearm in - the two tonearms are SME 3009's! I haven't identified which version yet, that'll be a job for the weekend.
There were also two boxes that I can only assume are rather crude remote units for a broadcast desk - see the attached. I'm guessing the solenoid was energised and clamped the mat until the record was started from the broadcast console (AFAIK these were used with a 70's Genesis console).
Finally a date for when these were probably put into storage - the newspaper used in packaging was a Nelson community paper with no date, but it was before NZ changed to 7 digit phone numbers (1990-91), and with Robocop being at the movies and 26/1 being Tuesday these were packed in early 1988.