This advert from 1949, is for stainless spokes, as used in the 36th Tour de France. These spokes are branded Raggi Stella ('raggi' is Italian for 'spokes'). Most importantly, the advert shows the star logo as is seen on one of my derailleurs.

This low-res image was sent to me by Guido in Spain - thanks for this.

• Publisher: La Gazzetta dello Sport
• Country: Italy
• Date: July 1949
• Derailleur brands: Stella
• Derailleurs: none