ruby red Arcoroc glass dishes, plates, cups, soup bowls

Ruby red Arcoroc glassware made in France, 80s or 90s? There are four each of salad plates (about 7 1/2" in diameter), dinner plates (about 9 1/2" in diameter) and rimmed soup bowls (about 8 1/2" in diameter) There's four saucers, but just three of the cups.

These don't appear to have been used at all, but there's some odd streaking (like an iridescent shine of oil) to the surface of some of these pieces which have been wrapped up in clear plastic for years.

It didn't wipe off for us with a mild dish soap or vinegar rinse, and we aren't sure what to use to remove it - but if you know how to clean this, please email us, we love to get them cleaned up nicely!