Topcon's Strangest Lens?
This 25mm f/3.5 'super wideangle' lens is one of the original six RE Auto lenses marketed with the first Model 46 camera in 1963. The retrofocus design of this era required a large front element and meant a standard 62mm filter could not be used without vignetting.  So Topcon provided ten tiny, rear bayonet   mounted filters. Also, the disk-shaped lens hood could hold a Series IX filter.

The Lens-Lite[sic] Exposure Meter
Translation: A Light Meter that attaches to a lens! This device is shown attached to the Model III Microscope adapter in place of the camera body. Carried over from the Topcor R system, the Lens-Lite Meter  was valuable for taking light measurements for high magnification photographs (macro/micro and long telephoto lenses). The built-in exposure meter of the RE Super/Super D made it redundant for most situations, but it remained in the inventory for several years because of its advantage under extreme low light conditions. It covered ASA between 6 and 1600, apertures from f/1 to f/22 and shutter speeds from 60 to 1/1000 seconds.

A Study in Black
Here is a Super D, Model 46, in black finish with a black 58mm f/1.8 lens. The pentaprism has been replaced with a rare black finish waist-level viewfinder. The Model 46, and associated lenses, were offered mostly in chrome finish but some came with black finish. The finish of the lens was semi-gloss (satin) with white calibration markings for the 'feet' distance scale.  The last generation of these lenses had a black matte finish with the 'feet' calibrations marked in bright orange.

Long and Lanky
With its lens hood extended, the RE Auto Topcor 200mm f/5.6 lens seems cantilevered out and almost ready to droop. Topcon decided to make this lens compatible with the 49mm filters of the more common RE lenses, but the 200mm focal length resulted in a rather slow lens. I do not know why Topcon never converted their R Topcor 200mm f/4 to an RE version like they did with the 300mm f/5.6.

The 'Good Old Days'
This Topcon Flash Gun was a handy item before the advent of electronic strobes. It was compatible with the 'hot shoe' accessory mount and could accept three types of flash bulbs without adapters. A circular calculator at the rear aided the photographer in computing the correct exposure. It used the BC (battery, capacitor) type of bulb ignition to ensure reliable operation.

This is a collector item only since flash bulbs are uncommon. And even if you could find some bulbs, I doubt the small 22.5 volt battery is available.