leica accessory ID help needed

[removed account4]

hi leica-knowers

i am sure someone here knows what brand &c this tid bit is
i have a close up/macro bellows with a groundglass viewer used with a screw mount leica.
probably it went with a iii .. but not sure which one ... ( sorry )

anyways here are the pix ..



anyone have a clue who the maker was if it wasn't leica ?
nothing on it except for the label ...

any help would be appreciated !

and then it will go in the classifides because i have no use for it
( i am just trying to figure out its name before i put it for sale )

thanks in advance !
john

 

[AgX]

This is the first time I see, even as photo, a made in West Berlin US Sector marking.

 

[AgX]

Manufacturer is Hans Sperling.

 

[removed account4]

thanks !!

had a feeling you knew it !

 

[AgX]

For operating you need a twin/cable release.

 

[removed account4]

weird, it has a knob on the side to raise and lower the reflex mirror
other than that it is hollow. no clue what the point of s shutter release would be ...

 

[AgX]

The cable release flips up the mirror, the knob returns it.
Maybe the knob takes in addition both functions, and still there is that cable release. The thread for it is opposite of that knob.

 

[removed account4]

i figured so much ... mirror flips down with the knob too

thanks for your help !