speedo fastskin I

Perhaps this has been addressed elsewhere, but I haven't found it, so here goes. I have 2 kneeskin fastskin I (female, zipperless recordbreaker back) suits that are in decent shape and I would like to wear them for LC season. I don't see fastskin I on the approved FINA list- only fastskin II. And they are several years old, so there would be no "FINA approved" label on them either. Can I wear them or not?