| Camera No. | 11/04 | 11/05 | 11/06 |
| Camera Name | Keystone Mayfair | Argus Electric-Eye Zoom Eight | Wollensak Eight |
| Film Size | 16mm | 8mm | 8mm |
| Film Type | Magazine | Double-8 | Double-8 |
| Model | K-55 | 409 | 53 |
| Camera Maker | Keystone | Argus Incorporated | Wollensak Optical Co. |
| Location | Boston | Chicago 48 | Chicago |
| Made in | usa | Japan | usa for |
| Serial No. | LM-4374 | 6119534 | 712433 |
| Lens | turret pair bausch & Lomb Opt. Co. 26mm f/1.9 ANIMAR BALCOTE rubber cap | S-RESONAR ZOOM LENS Y 1:1.8 f= 11.5-32mm No. 6147880 | turret Wollensak 13mm f/1.9 CINE RAPTAR / RAPTAR 1 1/2"(38mm) f/2.5 CINE TELE Group I / 6.5MM F/1.8 WA CINE RAPTAR Group I |
| Mechanism | spring works | spring works | spring works |
| Condition | **** | **** | **** |
| Container | Original leather case | Original leather case | N/A |
| Additonal Parts | N/A | manual Walter E Youngdale | DeJUR takeup roll |
| Lightmeter | N/A | built-in | N/A |
| Features | N/A | N/A | N/A |
| Patent No. | N/A | N/A | N/A |