| American Optical sixty student microscope laboratory | $56.00 |
| American Optical sixty student microscope laboratory | $68.50 |
| American Optical Spencer Microscope with Power Supply | $76.00 |
| 1880's American Microscope "E.H. & F.H. Tighe, Detroit" | $230.26 |
| Olympus AO American Optical POL Polarizing Microscope | $255.00 |
| AMERICAN OPTICAL CO LIGHTED MICROSCOPE/AO SIXTY SPENCER | $40.00 |
| American Optical Mod. 570 microscope 0.7 to 4.2x | $158.50 |
| American Optical Spencer Microscope | $49.99 |
| American Optical AO Spencer 1036 Microscope w/Dual Head | $229.99 |
| American Optical 110 One-Ten Microscope | $131.48 |
| American Optical Microscope -Excellent condition | $25.00 |
| American Optical AO 569 Stereo Microscope 10 WF Oculars | $133.50 |
| American Optical 561S Stereo Microscope Transmited Base | $34.87 |
| American Optical AO Stereo Microscope Clear Stage Plate | $11.01 |
| AO Optical American Optical Spencer Model 10 Microscope | $157.50 |
| Microscope Eyepieces American Scientific Products | $16.00 |
| MITUTOYO / American Optical Microscope NR | $157.50 |
| VINTAGE AO AMERICAN OPTICAL SPENCER MICROSCOPE + EXTRAS | $103.03 |
| Compound Microscope American Optics Model 1036 | $32.51 |
| American Optical Spencer Sixty Microscope | $46.00 |
| AMERICAN OPTICAL MICROSCOPE MOUNTING ARM & HEAD BRACKET | $33.99 |
| SPENCER AMERICAN OPTICAL STEREOSCOPIC MICROSCOPE-NR! | $31.00 |