The first Komet II c/n 2/23 CH50 was with Ad Astra Aero in 1921. Fitted with a 185hp BMW IIIa it has a 2-blade wood propeller and the pilot's cockpit is close behind the engine in the wing leading edge.
CH 50, a Dornier Komet I operated by Ad Astra Aero AG of Zurich. The windshield can be seen mounted on the wing leading edge. The aeroplane in the background is a Sablatnig P III.

Самолёты на фотографии: Aircrafts on the photo: Dornier Komet - ГерманияGermany - 1921Sablatnig P.III - ГерманияGermany - 1919

Probably the prototype Komet II. It has a much smaller rudder than the prototype Komet I. The aileron balance surface can be seen in this view.
A late production Komet II with a larger radiator and high fully-enclosed engine cowling which probably hides the more powerful 250 hp BMW IV engine.

Самолёты на фотографии: Aircrafts on the photo: Dornier Komet - ГерманияGermany - 1921

D-248 at a later date as "Dusseldorf" of DAL now has a much taller exhaust pipe exiting from ahead of the front cylinder, probably as a result of pilot complaints about fumes from the earlier installation being detected in the cockpit.

Самолёты на фотографии: Aircrafts on the photo: Dornier Komet - ГерманияGermany - 1921

KEITH WOODCOCK’S painting of Komet I D-248 Dusseldorf. This aircraft served with Deutsche Luft-Reederei and passed to Deutscher Aero Lloyd before becoming Luft Hansa’s Jaguar in 1926. The crane emblem, still used by Lufthansa, appears on the rudder.

Самолёты на фотографии: Aircrafts on the photo: Dornier Komet - ГерманияGermany - 1921

This Luft Hansa Komet III, D-580, was later named Panther and it is believed to have operated Luft Hansa’s first service, on April 6, 1926.

Самолёты на фотографии: Aircrafts on the photo: Dornier Merkur / Komet III - ГерманияGermany - 1924

DDL Danish Air Lines’ Komet III T-DODB had been Deutscher Aero Lloyd’s D-585 and was bought by DDL in 1925.
Komet III of DDL T-DODB c/n 75 with R-R Eagle and 4-blade propeller. It was later converted to Merkur with DLH and on 23.9.27 its remains were scattered on a hillside when it crashed following structural failure.

Самолёты на фотографии: Aircrafts on the photo: Dornier Merkur / Komet III - ГерманияGermany - 1924

Luft Hansa’s Merkur D-1102 Edelmarder, with BMW VID engine, was built in 1927. It is believed to have been later used by Deruluft and finally re-registered D-UDYF.

Самолёты на фотографии: Aircrafts on the photo: Dornier Merkur / Komet III - ГерманияGermany - 1924

The open-cockpit BMW VI-powered Merkur CH 171 Switzerland in which Walter Mittelholzer flew from Zurich to Cape Town in 1926-27. With floats fitted this Merkur was given additional rudder area.

Самолёты на фотографии: Aircrafts on the photo: Dornier Merkur / Komet III - ГерманияGermany - 1924

With the early Soviet registration RR-34 repeated under both wings, a ‘Merkur’ II shows its intermediate wing struts necessary due to increased weight. This is probably a machine operated by ‘Deruluft’.
On the reverse of this Dornier photograph of Deruluft’s RR34 it is described as a Merkur I.
RR 34 has the standard BMW VI engine and is seen starting to climb away after a demonstration takeoff from the trees in the background. The tall window of the enclosed cockpit is clearly visible.

Самолёты на фотографии: Aircrafts on the photo: Dornier Merkur / Komet III - ГерманияGermany - 1924

Kawasaki-built Komet III, J-BADA, with Lorraine engine and two-blade airscrew. This example incorporates some Merkur features and was operated by Tozai Teiki Kokukai on the Tokyo-Osaka route.

Самолёты на фотографии: Aircrafts on the photo: Dornier Merkur / Komet III - ГерманияGermany - 1924

The passenger cabin of a Komet III. Behind the camera are two aft-facing seats. At least some of the windows could be slid open.

Самолёты на фотографии: Aircrafts on the photo: Dornier Merkur / Komet III - ГерманияGermany - 1924

Deruluft’s Merkur RR36 in an undignified position. This example has an enclosed cockpit “beneath” which is the route placard reading Moskau-Berlin.
RR 36 c/n 175 of Deruluft after becoming inverted during a landing accident on the Moscow-Berlin route. Visible are the shattered propeller, the undamaged bracing members on the underwing struts and the pilot's post crash escape route via the enclosed cockpit open window.

Самолёты на фотографии: Aircrafts on the photo: Dornier Merkur / Komet III - ГерманияGermany - 1924