π 1920 Marshall Field & Co Galilean Opera Glasses – Vintage 25mm 3x Gem π
USD 75.00 USD
Specifications
| Lens Coating | Uncoated |
| Size | Compact |
| Color | Black |
| Objective Lens Diameter | 25 mm |
| Item Length | 3.5 in |
| Brand | Marshall Field & Co |
| Type | opera glasses |
| Unit Type | Unit |
| Item Height | 1.5 in |
| Model | Galilean Opera Glasses |
| Country/Region Of Manufacture | France |
| Optical Design | Galilean |
| Application | Opera Glasses |
| Item Weight | 6 oz |
| Item Width | 4.5 in |
Optical Design: The marking "12 Lenses" suggests a Galilean optical system, typical for opera glasses of this era, providing a wide field of view for theater viewing. These elegant binoculars are marked "Marshall Field & Co Chicago" on the lens barrels and "12 Lenses" on the bridge, indicating their optical design.
