SIMPLEX JUY 543 Derailleur #7222113782:
http://ebay.com/
1950s STRONGLIGHT 49 D Crankset #7222116111:
http://ebay.com/
If you ever needed a 543 for your unrestored fifties French racing bike, this would be the one. Some chrome flaking and a small scrape on the cover but looks presentable. I don't think it will go very high since it's not NOS so won't hold much appeal with the collectors in the Far East.
Chuck Schmidt South Pasadena, Southern California
.