Just looked at the front hoses on my 69 and they're dated 05/16/77. The rear no longer has any print although I can see a bit of red striping at one end.
I need to replace the brake hoses on this car so I picked up a set through AcDelco and they are made in China. They look like nice hoses and fittings except for the name "Susong" printed on the rubber and laser etched on the fittings. So, then I got to thinking about the repros with the "correct" red lettering (ebay) and that got me thinking about the dates printed on them. Is it safe to assume that the brake hose dates would range from 0 to 3+ weeks prior to the body build date?