Visor estereoscópico
Desconocido
View the embedded image gallery online at:
https://www.photomuseum.es/index.php/eu/component/k2/item/621-visor-estereoscopico#sigProId314aa2c5ec
https://www.photomuseum.es/index.php/eu/component/k2/item/621-visor-estereoscopico#sigProId314aa2c5ec