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OPERA GLASSES AND SPYGLASSES
spectacle opera glasses
A. Abraham & Co
Europe: United Kingdom, England, Lancashire, Liverpool
eye width: 32 mm; DBL: 27 mm; front width: 135 mm
Spectacle opera glasses. Tortoiseshell front. Arched bridge. Elongated centre joints. Dark tortoiseshell narrow aperture auxiliary lenses (eyepiece lenses) hinged at sides. Objective lenses attached to second telescopic front (missing: only holes remain for attachment of second front). Metal turnpin sides. Round eyes. Glazed.