Another one I rustled up from the WWW, which was sold by Osenat auction house in mid-2012 :
4595341, Cabriolet Injection 1965, Rouge China 1135, Tan Leather, sold at auction on 21 June 2012 @ 6500 Euros; belonged to the German press-man Axel Springer, rebuilt engine, body requires restoration, FONTAINEBLEAU FRANCE
It turns out that "4599422" is actually 4592922, which was already registered in 1992, so the total is actually only 1726 after all. We will find more, don't worry!
Thanks go out to Louis M. from the Ain Département in France, who this evening sent me an email with the VINs of both of his 404C cars. One, a Cabriolet, was already registered, but the other one is new:
4591541, Coupé Injection, 09 juillet 1963, Blue, LAGNIEU FRANCE
Thanks to Gayle Murphy from the Department of Motor Vehicles, Connecticut USA; she confirmed that the following car is serial number 4498473, located somewhere in Connecticut USA.
It looks like a very nice example. The car was already registered before, but now we have a photo of it.