Visor estereoscópico
Unis-France
View the embedded image gallery online at:
https://www.photomuseum.es/index.php/eu/component/k2/item/767-unis-france-stereoscope#sigProIde2f6e743ad
https://www.photomuseum.es/index.php/eu/component/k2/item/767-unis-france-stereoscope#sigProIde2f6e743ad