They are definitely old forks. Impossible to tell if they are recent assemblies of NOS parts or NOS already assembled forks. I would imagine they are recent assemblies as the the seals don't look to be over 20 years old. The forks have the yellow "Made in Italy" stickers.
They came with warranty cards. I'm tempted to mail them in but the address is now an HVAC company and they may not want to provide any support...lol!
The 80mm Z4 looks like a 2000 Flylight Air, which is nice at $214 for a 1-1/8" steerer, rim brake, QR, 26er. They are $321 now. Still a good deal in comparison with what is available these days.
The 70mm Z4 looks like a 1998 Oil Bath coil spring like the old 90's forks, but with no adjustments. But it has a removable crown.so It can be used as is or pirated for parts. I also see it as a potential replacement for my '98 Z3 with a 1" steerer. Just need to swap crowns and arches (cantilever brakes) and I'm go to go.; or mix-n-match.
John