Hi Jourian!
Have You considered modern Panaracer tires with an old thread pattern? Like FireXCPro, Dart or Smoke?
Much safer, as old tire compound tend to become stiff and cut skin when mounting them or as seen on image above - loosing flex tire is cracking, thread knobs can fall off.
I'm not selling this particular models, just as a Panaracer retailer seen them and used some on new-retro builds. But I can ask if it's possible to get Smoke and Dart skinwall (Panaracer calls them amber to be correct) tires (new of course) and send them if these are not present @ Your LBS.
Did You guys know, these are still made in Japan.
This is Retrobike ..we knew at least a year before the re-issues were first released.
These are all 90s tread patterns anyway..the Op is looking for something older.
Got a set of very little use Racer X1 Pro………with green sidewalls……..it either works or it doesn’t! I’m moving them off a bike they just don’t look right on.