You're probably correct, Austin, re appropriate dates, although I've never read anything about 'date codes' on brake hoses (maybe it's out there and I'm not recalling or haven't seen it).
I don't think I'm going to bother with 'date coding' new but obviously NON-original hoses (double crimping precludes them from being original), and I certainly wouldn't pay the 'several hundred $$' for such a reproduction hose.
I have my original hoses 'bagged up' and will probably take them whenever I get my car to the point of showing it in an unrestored/survivor type of judging, but IMO going to such extreme efforts or paying such exorbitant $$ for an obviously non-original reproduction?? part doesn't make sense when a quick look at the double crimping shows it is NOT original... but I wouldn't pay that much for properly dated single crimp NOS hoses either..
.. but that's just me. I LIKE original cars and original parts for what they are, but when it comes to reproduction parts (for looks?).. I'm not a fan.