Nikon Vintage AR-7 Dual Shutter Cable release

Up for bids is this vintage dual cable release for the PB-6 Nikon bellows focussing attachment,When used with the PB-6, the AR-7 will stop the lens down to the preselected aperture at the moment of exposure - a necessity for macrophotography. This could also be used on a PB-5 or PB-4 along with a BR-4 to perform the same function. The AR-7 can be used with all cameras having standard cable releases, such as the FE2, FM2, FM2N, FM3A, F3, etc. 

I have also used this cable on a Mamiya RZ67 Pro II. Its much more durable than the Mamiya equivalent. 

The cable release is in excellent condition and functions well.