never seen a set like these before, they have a bolt on air duct, which aids cooling, so probably the ultimate version of the vw2 caliper.
fit straight onto vw1 carriers and really are a great improvement over the vw1 type fitted to non g40 models.
they are genuine vag ones (i.e the ones that cost £80 a pop), not cheap copies, all the rubber seals all look to be in good order.
bleed nipples have been free'd off, so are ready to fit
£40 collected, but can post if need be.