Topcon's Motor Drive remained almost unchanged from 1963 until the end in 1977. However, during this period many accessories were added, and while there seem to an abundance of the Motor Drive itself, many of the accessories are scarce.

Starting in front and going clockwise:

A medical model Motor Drive, recognizable by the letter 'M' engraved on the front, just below the Topcon name. This model differs from the standard model by having slower continuous speeds and non-functional contacts on the front slide mount.

The Battery Tester voltmeter, supplied as an accessory for the non-cord battery pack.

A Bulk Film Loader used to load the film cassettes for the Bulk Film Back.

The Remote Control radio receiver. A companion transmitter is required.

Two versions of the power cord for connecting a Belt Clip battery pack to a Motor Drive. I have no idea why Topcon used two different styles of connector. Both type of cords are hard to find, possibly because nowhere on either cord does the Topcon name appear.

And finally the Motor Drive Hand Controller. Again, supplied for use with the Non-cord Battery Pack to allow remote operation (up to 100 feet) via a long connecting cord.

Shown above is a group a miscellaneous items that I consider very collectable.

Mounted on the arm of the very rare Model II Copy Kit is the equally rare Bellows Microscope Attachment.

In the back row, on the left, is the Model I Flash Gun, and on the right the RE Auto Ring. The Auto Ring provides a 29mm extension for all RE Auto lens and couples the lens diaphragm, and aperture setting, to the camera body.

At the left of the center row is a Waist-Level Viewfinder in black finish (very rare). To it's right the Model III Rubber Eye-cup and an Incident Light Receptor.

I have included three specialized focusing screens in the front row. All three of these are clear glass without a ground glass screen. Left to right:  The No. 6 used with a magnifying viewfinder for high magnification work using aerial focusing.  The next two are the No. 7 (for use with focal length lenses less than 100mm) and No. 7A. (for use with longer lenses). Both have a central microprism for focusing and produce a very bright image useful for available light photography. These are the last three screens Topcon offered and because of their specialized use, they are now scarce and expensive, when you can find one.

Collector's Choice Page 1