Visor estereoscópico
View Master
View the embedded image gallery online at:
https://www.photomuseum.es/index.php/eu/component/k2/item/631-view-master-fossil#sigProIdee1a1d79ef
https://www.photomuseum.es/index.php/eu/component/k2/item/631-view-master-fossil#sigProIdee1a1d79ef