I saw this being offered on ebay. An interesting P&S 4x5.
This camera was called `Sinar-handy´.
It is actually just the rear standard with international back + a lens in barrel + a viewfinder + pistol grip (which seems to be missing in that offer).
Sinar offered 6 Super-Angulons from 47mm to 90mm and one Symmar 100mm. All in focusing barrels.
And 2 Mamiya viewfinders of 47 and 65mm resp. and one Graflex viewfinder with 4 masks.
It looks like an Arca version of the Sinar Handy. The knobs and lensboard attachments are Arca style.
Photography (not as up to date as the flickr site)--http://www.davidagoldfarb.com/photo
Academic (Slavic and Comparative Literature)--http://www.davidagoldfarb.com
could not open enlargements of those thumbnail photos.
(Did not kow that Arca had a similar version.)