I'm just gonna leave this here for y'all ...

[pete]

OK, folks. What's this from?

You shouldn't be able to Google Image search it and I'm pretty sure I've wiped all the EXIF data ...

 

[TrueTone]

Stumps me.
Appears to be a neck from some obscure Bari Sax, judging by where the odd looking octave key ends.

 

[Tony Fairbridge]

Conn or Buescher?

 

[pete]

Orsi baritone. It was on eBay.it a couple weeks back.

I've not seen another neck like this on a standard baritone. The Georgeophone had a similar neck.