I've got a 90s Schwinn Cruiser Seven. but I don't think these are the original pedals for this bike. I've heard they were used on Phantoms or so. Does someone know what kind of pedals these are and where they were used?
Yep...those are the pedals that came on the Phantom. At that point in time you could buy many of the Phantom parts at the bike shop so they were probably purchased separately or the shop selling the bike added them on.
On Ebay they can bring anywhere from $100-$150 a pair these days.