Western Electric 558 receiver???

[Sargeguy]

What's the story with this one?

http://www.ebay.com/itm/321675237351

[wds]

Late reply.  The magnet looks like my Century.

[rdelius]

You do not have the proper insert.Made for a mine or explosure proof set.the cord went through some type of gromit with a nut to tighten things.Not sure which cap they had but they might have sealed the spaces inside with tar and a tamper proof cap

[paul-f]

Good call, Robby.

From the WE #7 Catalog...