Which model NADY wireless is this?

[Sacha]

I'm in search of a very specific vintage NADY wireless handheld microphone circa 1979-1986 but, I'm not sure of which model it may be. Here's a pic of the mic:

http://www.nady.com/images/timeline_big_1979.gif

It would have been the model(s) used on stage by such lead singers:
Michael Jackson
Ozzy Osbourne
Def Leppard
Quiet Riot
Bon Jovi
Ratt
U2

If you know which model NADY wireless this is, please Post a Reply.

Thanks in advance!

 

[moresound]

Is that the only picture you have of it? How about the box it comes in?