A Raab-Katzenstein RK 6 biplane - a 1928 copy of the L.V.G. B.III [Germany, 1928]
It's like looking in at the war period but in reality this picture was taken between 1928 and 1932 and shows a brand new built Raab-Katzenstein RK 6 biplane with civil registration D-1366.

Raad-Katzensten built a few new L.V.G. B.III biplanes and named them RK 6. Outwardly they are indistinguishable from the original L.V.G. B.III.
Type Two seat sportplane, new built  LVG B III
Engine 1 Daimler  D I 1 Daimler D II
Dimensions Length 7,89 m, height 2,89 m, span 12,51 m wing area 32,15 m2
Weights Empty 700 kg, flying weight 980 kg, fuel 54 kg, oil 10 kg, pilot 80 kg, payload 136 kg
Performance Max. speed 110 km/h, cruising speed 100 km/h, service ceiling 3800 m, range 250 kmclimb 3,0 m/sec., landing speed 60 km/h
climb
Max. speed 120 km/h, cruising speed 100 km/h, service ceiling 3800 m,  climb 4,2 m/sec., range 250 km, landing speed 60 km/h
Type Werk.Nr Registration History
24 D-975 Raka, Kassel. Withdrawn from use April 1932
25 D-1032 Leipziger Verein f. Luftfahrt. Destroyed May 1928
28 D-1061 Verein für Luftfahrt Dortmund. Cancelled July 1938
29 D-1070 H. Fink, Hochheim. Zirkus Show, Landsberg. Burnt Sept. 1929
52 D-1156 Dr. Nicolai, Ostheim. Withdrawn from use April 1932
53 D-1152 Verein Für Forderung des Flugwesens, Cottbus. J. Schuhmacher, Wiesbaden
54 D-1260 Verein für Forderung des Flugwesens, Cottbus. Destroyed Febr. 1932
55 D-1273, A-66 Fliegerschule Bork. Sold to Austria  April 1929
56 D-1366 April 1928. A. Thoma, Zwickau. Destroyed Oct. 1932