Underwood & Underwood Cantilevered Stereoviewer
An uncommon handheld cantilevered stereoscope by Underwood & Underwood of London. 29cm (extended), and stowed when not in use within a box 14cm x 13cm x 5cm. Maker’s trademark embossed to the uppermost surface and patent number engraved within. Pictured with a stereocard by the same company, labelled ‘London to Paris Air Service, Parcels ready for shipment (Croydon Aerodrome’).