Looking for a Lisa Apple Cluster Controller

Anyone got an Apple Cluster Controller they can sell me? - this was a serial terminal device that allowed you to connect a Lisa to an IBM SNA network.
Here is a photo of one:
https://s-media-cache-ak0.pinimg.com/originals/13/8f/a7/138fa757fade96f0e32210b810746cf0.jpg

It's not something you use every day so I hope that someone has one they can sell :)

Thanks
Iain

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