pull them apart and check it is a plastic cartridge, has a skewer for a top cap too.
then it's a 1995 model.
if not then something is wrong with them
for that sort of asking prices I would expect NOS in a box on a platter and definitly SL, do you really mean £200?+ fees+ postage.
Without a look at he insides showing stanchions at the bottom and MCU quality these are very expensive spares or repairs.
in the years of these selling that ~£40 posted usually cheaper
or more if you show all the innards and describe it with a few more knowns.
unless the steerer is Alu and 220mm+