Probably a D37, note the unusual rollhoop.
   
Germany's only F3 constructor of the early 1980s, Erwin Derichs constructed a number of distinctive looking if generally not too competitive cars. They were built to contest the German F3 series and cars were being produced up until 1984.
   
 
A singleton D34 chassis was run in the German F3 series for Hans Hargarten, it used a Ford engine and was never very competitive, the best result was a third place in a poor field at Salzburg.
   
 
Erwin Derichs ran his own Ford powered car in the German F3 championship, it wasn't very competitive and recorded no top 6 finishes.
 
At least two cars were built for 1976, designated the D36 one was fitted with a BMW engine the other with a Ford. Results were poor in the German F3 championship with a best finish of tenth, taken by Derichs himself.
   
    
Erwin Derichs with his D37.
All the later Derichs seemed to follow a standard pattern, a slim honeycomb monocoque with conventional suspension. The exhaust on the right hand of the car indicates it could be VW powered. Results were not good with a best finish of 7th at Hockenheim for Peter Kroeber. The next car does not seem to have appeared until 1980.
   
    
Derichs continued using the D37 in the Bose team (which seems to have been the works team) for 1978 results were generally poor although Peter Kroeber won a non-championship race with a small field on the short Nurburgring. Kroeber also took another three top six finishes during the season, all in non-championship events.
   
    
Once again it was the D37 that was used by the Bose team and Peter Kroeber who again had some good finishes in non-championship races.
   
    
For 1980 a new car, the D380, arrived on the scene. As in previous years the car was no match for March, Ralt, Chevron etc. in the German Championship rounds, the only top six placing being a fifth for Schlich at Siegerland. However as ever some good results in the much smaller non-championship races were garnered.
   
    
It was the D380 again for 1980 and as ever it was championship = bad, non-championship = good.
   
    
Jurgen Endres in the Derichs D382 at the Nurburgring, May 1982.
The D382 was introduced for 1982, it seemed a small neat car with a bullet shaped body. It was fitted with a Toyota engine and recorded a couple of top ten finishes.
   
    
Another new car for 1983, the D383, it only did a few races and results were poor.
   
    
A very poor quality shot of the D384, it seems to have a similar body shape to the D382.

Front suspension detail showing the pushrods and top mounted dampers.
1984 saw the introduction of the new D384 although in entry lists it was listed as the D385, it seems to have followed the general design of the earlier cars.
As ever the cars struggled in Championship events and only managed three top six results in the non-championship rounds.
   
    
The D385 continued for another year in a handful of races, no good results were achieved. The same car appeared for another two years with results tailing away even more as the car showed its age.
   
   
Drivers  
1974 Hans Hargarten.
   
1975

D34
Hans Hargarten.

D35
Erwin Derichs, Romain Feitler.

   
1976

D35
Peter Bonk.

D36
Erwin Derichs, Olaf Höhn, Manfred Leppke.

   
1977

D37
Herbert Bürgmayr, Peter Kroeber.

D36
Arno Derichs. Erwin Derichs, Jürgen Schlich.

D35
Peter Bonk.

   
1978

D37
Heinz Beißler, Arno Derichs, Olaf Höhn, Henning Hagenbauer, Peter Kroeber, Jürgen Schlich, Hannelore Werner.

D36
Konrad Heberer.

D35
Peter Bonk.

   
1979

D37
Arno Derichs, Frithjof Erpelding, Olaf Höhn, Peter Kroeber.

D36
Konrad Heberer.

D35
Peter Bonk.

   
1980

D380
Heinz Beißler, Erwin Derichs, Jürgen Schlich.

D37
Arno Derichs, Jürgen Schlich.

D35
Peter Bonk.

   
1981

D380
Heinz Beißler, Henning Hagenbauer, Bernd Suckow, Bernd Wicks.

D37
Arno Derichs, Frithjof Erpelding, Helmut Kalenborn.

   
1982

D382
Jürgen Endres.

D380
Erwin Derichs, Rudi Seher.

D37
Helmut Kalenborn.

   
1983

D383
Rainer Offenbach.

D37
Pit Bilger.

   
1984

D385
Pit Bilger, Jürgen von Gartzen, Wolfgang Kaufmann, Bernd Wicks, Manfred Zimmermann.

D37
Pit Bilger, Jürgen von Gartzen.

   
1985 D385
Klaus-Dieter Hoekel, Bruno Stanjek, Manfred Zimmermann.
   
1986 D385
Stefan Oberndorfer.
   
1987 D385
Gerhard Müller.