A cased set of stereoscope and cards

Early-20th Century
Marked: Monarch / Manufactured by Keystone View Co. / Meadville, Pa. / Pat'd Apr. 12, 1904
Stereo optic viewer together with 204 cards
Case: 6" H x 15.75" W x 13" D
Condition Report: Case and stereoscope in overall good condition with scattered scuffs, scratches, nicks, shrinkage cracks, and separation at joints commensurate with age. Bending and general marks, scratching, and rubbed wear to cards.