Very rare.. cover for a full plate Mascher's stereoscope viewing case, early-1850s. How often have you seen this size viewer before? Never? Banded leather exterior in very good antique condition, and the viewer is also in very good antique condition.. both lenses present... now all you need is the other half of a banded, whole plate case and you'll be the proud owner of an ultimately rare giant full plate Mascher's stereoscope viewer case.
Boxed Priority Mail.
Boxed Priority Mail.