Hello and welcome to the house of Chrome.

 You are looking at what I believe to be a 1970's era AKG model gooseneck (model number unknown) that comes with a stock painted metal flange used as a base.

 I have not seen this particular flange or gooseneck before but they are certainly vintage. It's similar to the Atlas GN-13 model. Much like the Atlas goosenecks it comes with a quality chrome plated finish and is quite rigid.

 The gooseneck shows just very lite wear and will fit any mic clip or screw on mic you have as the threading is universal.

 The painted flange shows a bit more wear but free of any dents or corrosion. It's appx 2 1/2 inch long and has 3 holes where you can use screws to secure the flange to any surface you wish to use.

 This unique adapter set up allows you to get extra reach or any angle with any microphone you might happen to have. 

               And as always...