AO American Optical 40 Forty Stereo Zoom Microscope-Works OK at 10/20X As Is

American Optical Spencer Series 10 Microscope with 4 Objectives, 10-118

American Optical AO Spencer Model 4-1 Binocular Microscope Spenser Microscope

American Optical Monocular Microscope Model Sixty 3 Objective 4/10/43 Used

American Optical AO Spencer Microscope W Case

Vintage AO American Optical Microscope Microstar One Ten Dual Head 5 Objectives

American Optical 1036A AO Spencer Microscope Illuminator w/ 1051 Transformer

American Optical AO Spencer Model 1031 Dual-Head Illuminator Microscope