Greenfield (coated with gray plastic) ----- is probably LFMC Liquidtight Flexible Metal Conduit.
I too have a similar image. If you can take a digital image and email it to me, I can post it here. If not I will look for one that may help to generate more discussion.
I don't really have an answer to the pole question you ask, if I do go back and I will sometime soon to San Diego, I will take the trolly into that bordertown near Tujuwanna and take another picture.
