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5580 - the SNCF 1st class Inox coach - Prior to 1970 the prototype coaches were as above thereafter they carried the SNCF badge as shown below 

Prototype information

Type: 

 U 50/52 A8  A9tj. DEV Inox longue.
Max permitted speed 140 to 160  km/h (85 - 100 mile/h)
Bogies: Y24
Weight 40 tonnes
Length 25 100 mm
Passengers: 54
Compartments 8
Introduced 1957 to 1973.

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