The ‘Komet’ III was licence-built in Japan in 1926. J-BANA owned by the Kawasaki Dockyard Company was operated by the Tozai Teiki Kokukai (TTK) airline, one of Japan’s first.
J-BANA was J-COFH re-registered after an engine change to a 460 hp Napier Lion 12-cyl 'broad arrow' or W engine, As seen here the original cowling was used but the Lion is identifiable by the lower-set four exhaust stubs and the left hand tractor propeller.

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

D972 ‘Konigstiger’, later to become D-UQET, takes off from Berlin’s central airport in 1926.

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

Mittelholzer’s ‘Merkur’ floatplane flew to Cape Town in the winter of 1926-27.

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

Switzerland’s second ‘Merkur’ was Walter Mittelholzer’s floatplane named after that country and numbered 171.

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

‘Merkur’ II ‘Kreuzfuchs’ joined ‘Deruluft’s’ fleet in 1929. The panel before the forward window reads ‘Moskau-Berlin’.

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

The prototype ‘Merkur’ showing the strengthening rib above the wheel which identified the early models.

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

‘Komet’ III ‘Panther’, later to become a ‘Merkur’, carries the route board ‘Berlin-Koln’ on the fuselage side under the wing. It is seen landing at what was later Berlin’s Tempelhof.
The Komet III D580 c/n 74, of Lufthansa taking off on the Berlin-Koln (Cologne) route, as marked on the side of the aircraft. The list of approved weights and loadings appears on the fuselage under the rear window. In later photographs the registration on the fuselage was taller and had acquired a hyphen.

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

The ‘Merkur’s’ BMW VI engine which dispensed with ‘Komet’s’ face-type radiator. The airscrew bears the red and black Dornier trademark.

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

A Swiss Red Cross ‘Merkur’ I named ‘Mercurio’ carries the Italian licence-build marking ‘Construzioni Meccaniche Aeronautica Marina di Pisa’. There were only two machines of this type in Switzerland.

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

‘Merkur’ II D-546 ‘Hyane’ (the name appears in minuscule letters under the final pair of letters of ‘Luft Hansa’) at Stuttgart with a Daimler-Benz van providing scale. Note the relatively crude navigation lamp mounting on the wingtip.

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

Broken lines on second side view show outlines of door and additional side window on starboard side of both ‘Merkur’ I and II. Scrap view shows ‘Komet’ III fin and rudder. Also illustrated are Dornier logo carried on the airscrew blades and the ‘Luft Hansa’ logo.

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