Selling a very nice Vintage Rare Primo EMU-4520 Electret Condenser Microphone with original box and paperwork.

I do not know much about this microphone, I picked it up from a collector. I was told it was rarely used and works great. Since I haven’t tested it, I’m selling as-is with no returns. If there is some type of testing you would like me to do, please ask. Otherwise ask any and all questions before buying.