Observation binoculars - Chevalier-Paris stara lornetka operowe z mosiądzu i masy perlowej - 1920-1930 - Francia
Binocoli da teatro - Rare Vintage Emil Busch "Multinett" D.R.P. Green Leather Opera Glasses with Pouch - Germany - 1930-1940 - Germania - Emil Busch
Binocoli da teatro - Vintage French/Japanese Mother-of-Pearl Opera Glasses (2.5x) - Modèle Déposé - 1950-1960 - Giappone