A four-day auction of spare Concorde parts has begun in Toulouse, south west France.
The auction is to raise funds for an aeronautical museum for the French city, with the centrepiece one of the two supersonic jets it owns.
Items on sale include a 1.2 ton landing gear, a Mach-monitoring speedometer and a windshield.
Concorde was an Anglo-French project, with work on the supersonic aircraft taking place near Bristol and Toulouse.
However, conspicuously absent from the sale will be the Concorde's trademark needle nose.
Three of them were auctioned in London and Paris in 2003 and 2004 - the first of which went for more than half a million dollars.
Cockpit gauges, including air speed indicators and horizontal situation indicators, will be sold along with lower-tech paraphernalia like a cabin oven or plate-and-silverware sets and toilet seats.
Simon Jones has already spent £50,000 on his Concorde collection.
"I've earmarked probably £60,000 to £70,000 here and am hoping not to go above that.
"But I have heard there are some serious collectors in town. It is a once in a lifetime opportunity."
The auction is open to the public
Another collector added: "My one regret is that I never flew on her. Now I've started collecting, it would have been cheaper to fly."
Concorde was decommissioned by British Airways in 2003 after being in service for three decades.
Former French pilot Jacky Ramon added: "There have been auctions in the past and prices are rocketing."
About 1,000 items are going under the hammer.