Lens:

f7.7, 7 ½" Beck Convertible Double Aplanat. Front component c. 15", back c. 12.5". Iris diaphragm Combined f7.7 - f45, front/back f14 - f90.

Shutter:

B&L Automat, speeds 1 - 1/100, B, T.

Construction:

Polished teak with brass fittings, black leather bellows.

Format:

4 ¾" x 3 ¾" exposures on 5" wide roll-film, Kodak size 104, Ensign size 5, or 4" x 5" plates held in double dark-slides.

Focusing:

Bellows to 2' 6". Two focusing scales both marked to 5', one for film the other for plates. Double extension with additional extension by using the front panel struts.

Attributes:

Two brilliant view-finders.
Film advance indicated by red window. Two circular spirit levels. Wide-angle flap. Wide-angle focusing rack. Removable back.

Identification:

One piece of brass on extension slide. Type 2 front standard lock. Type 3 infinity catch. Tongue and groove lens panel. Rack and pinion rising front. Early type front standard bolts. Type 2 wide-angle rack handle. Type 5 name plaque. "Patents" on struts.

Movements:

Rising front. Cross front. Tilting front.

Serial Number:

17412 .

With:

Hooded focusing screen. Plate back adapter. 2 tropical double dark-slides (1/2, 5/6). Bulb release. Case.