This is a set Dellorto PHM 38 Carburettors for the BMW R90 SS and R100 RS Air Head and others. Also for Moto Guzzi Lemans V7 850 T Laverda 750 GT S SF 1000 1200  and so on. Types are PHM 38 BD and PHM 38 BS. With accelerator pumps and the early type with grip mounting to the manifold.  Very nice state, see pictures.   . 

Ducati roundcase, Imola, Greenframe, SS, SD, GTS, MHR, SSD, Darmah, squarecase, S2, sport, supersport, Borrani, Ceriani, Scarab, Lockheed, Marzocchi, Brembo, monza , diana, mach, mach1, dm250, dm350, dm160, 160, 450, dm450, desmo, desmodromica, elite, elite 200, brembo, 900SD, Mark 3 , mark 2, CEV, 750, 750GT, 860GT, 900GT, MV Agusta 750 America GT SS