Extremely rare to the market is this fantastic 'Clairvoyant' stereoscope by Henry Swan of London - made to the design that he patented in 1858, and housed within its original velvet-lined domed walnut-veneered presentation case with Ivory plaque to the top marked 'The Stereoscopic Treasury'. The 'Clairvoyant' stereoscope was notable for its innovative design that used ribbed glass to separate the eyepieces rather than a wooden or fabric septum as was the norm. It could be used for viewing both card and glass stereoviews in the standard 3½" x 7" format, which could be stored - along with the viewer - in the case itself. Handle engraved "Swan's Patent Clairvoyant".

Case 15.5cm x 23cm x 19cm. Viewer approximately12cm x 19cm x 15cm

Condition: Both the viewer and case are in excellent condition. The lens optics are excellent, free from scratches, chips, cracks, haze or any other damage and delivering an excellent three dimensional effect. The felt lining to the stereoscope itself is excellent, the lining to the inner lid has wear. The veneer is excellent throughout, with only light fading - notably to the uppermost surface of the case. There is no key. The felt to the underside is heavily worn. Ivory licence D59787YX