[whaler]

It's the first time I see a brass Runyon piece.

There is a photo a Charlie Parker playing a metal Runyon. The metal piece with the one screw inverted ligature.

http://www.ne.jp/asahi/jazz/jazz/mouthpieces.htm

 

[whaler]

The mouthpiece on the bottom is definitely different. The shank is rounded. The only reason I am guessing that it is a Runyon is that I saw one just like it with the same ligature on eBay (didn't win it)