Can anyone identify this dropout?

[scant]

i've got no idea what it is! pics taken from both sides.

does anyone know what it fits?

 

[Carsten]

that's a rear der hanger dude!

not among these so i cant help any further

http://derailleurhanger.com/threeholes.htm

Carsten

 

[Crell]

Wow Carsten I love sites like that.

 

[scant]

hmm, the mystery continues..

 

[orange71]

it's going to be some odd shaped chainstay that attaches to :?

 

[scant]

cannondale maybe?

 

[jonnyboy666]

looks like cannondale to me, road bike, but i think it's the wheels manufacturing version.