Renix era relay cover in MO p/n 8956002298

[schardein]

I've had this relay cover for a while, hoping I would find some retaining clips... no such luck.  $20 shipped.

 

I scrubbed the heck out of this thing, I don't know what the "glaze" is.  It comes off with a fingernail, but not a scrub brush.  I'm patient, but not that patient.