Generally
A fan belt that fits Cadillac 1938-40 series 90 with the V-16 engine. This is what the belt looked like when the car left the factory. This belt is made by Atlas and has the part number 646 if you translate it to Gates number it becomes 594 This belt has been in a good storage place, it has no cracks and is in perfect new condition. So a NOS strap in top condition. NOS means New Old Stock, thus a factory new article of old design.
