Since a friend of mine got a shop for their business, and it has a sodium security light they're having an electrician replacing. I asked if I could have it when they switch it to an LED and they said sure. But I'm hoping it's a NEMA head since I prefer that to a yardblaster. But either way it would be interesting to find out.
Hope that you are getting a NEMA too...yardblasters are junk, especially the PSMH versions...MV's are worth keeping. Could it be wallpack? (I take it that you haven't seen this place.)