Request, Canberra TT18 Air Mileage Unit Control Panel required

Hi all

I,m part of a team that is restoring the Cockpit of TT.18 WJ721 and am looking to source an Air Mileage Unit Controller to fit in the Navigators Position. If anyone has one for sale or knows where I could source one it would help us no end. Alternately if anyone has a good Hi res image of the Control Unit so we could fabricate a replica that would also help us.

regards and thanks in advance