This is an unusual model of the Una, it is based on the De Luxe model and fitted with rack and pinion to the rear body of the camera but is only double extension. The size is 6 ½" x 8 ½" which is not an advertised size. The camera was probably produced around 1913. The name plaque, carrying the Whitehall address, would have been added when the camera was sold second-hand or serviced. The great size of the camera makes it difficult to use as a hand camera.

The Una was introduced in 1904. It was then a high-class 'Hand and Stand' camera similar to the popular Sanderson. In 1906 the Una De Luxe was introduced, this had a rear as well as front focusing rack, triple extension and tilting (swing) front. These refinements were not present on the standard model at the time. The front standard was held rigid by a pair of struts rather than the solid curved fork on the Standard Una. A reversing back was fitted to these early models.

The Una De Luxe was intended for telephoto work, wide-angle lenses and for studio work where the rear focusing rack would have been an advantage. It was available in three finishes:

• Brown stitched hide and brass fittings.
• Black stitched hide and ebonised wood.
• Polished mahogany and brass fittings.

About a year later (1907) a Una De Luxe No. 1 was introduced, this was a Standard model Una but finished in stitched hide, either black or brown, the original De Luxe was renamed De Luxe No. 2.

In 1909 the Una were altered slightly, the Standard acquired a revolving back and tilting (swing) front controlled by an arc shaped guide on the front standard. The De Luxe models also acquired these features along with the normal Una shaped front standard. The polished model was now listed as being made in teak. Until this time the De Luxe was available in quarter-plate, 5" x 4", half-plate and 7" x 5" sizes. In about 1911 a postcard size was added. The camera was listed just after World War I (also by then in 3 ½" x 2 ½"), but from c. 1920 it was dropped from the price list.

The price was £8.0.0 in 1909 for a quarter-plate without a lens. Any suitable lens could be fitted. Before the war the top-quality Zeiss, Goerz, or Ross lenses in a Compound shutter would have been usual.

A penciled note with this quarter-plate example shows that it was still in use in 1943.