For 1950, the Cyclo Super Olympic and Cyclo Oppy are retired from the 1949 range, and the iconic Cyclo Benelux makes its debut. Confusingly, the Cyclo Ace, which was arguably the least modern gear in that 1949 range, is retained. Perhaps Cyclo had a lot of stock to shift.
To summarise, the 1950 Cyclo derailleur range is:
Browse associated derailleurs.
Cyclo Standard 1932