Visor estereoscópico
Unis-France
View the embedded image gallery online at:
https://www.photomuseum.es/index.php/eu/component/k2/item/610-unis-france-stereoscope#sigProIdd12fd41575
https://www.photomuseum.es/index.php/eu/component/k2/item/610-unis-france-stereoscope#sigProIdd12fd41575