here are the two references I found :
and
https://foodal.com/best-of-foodal/clad-collection-right-kitchen/
the acuracy and reliability of this information is for you to decided.
I got the small and medium MC2 because they were on a very deep discount ( at different times )
to introduce the MC2 line. I did not have a saucier at the time
I didn't get any other AC pans , as I had a significant 3 mm copper collection i got in Paris
almost for fee ( FF was heavily discounted to the USD at that time , and the Paris firm
( you know the one ) shipped all the pans in a custom made wooden box , w wood shavings
inside ( 1980 ) free to NY via AirFrance. I happened to live at that time
about a hour away from the freight section of the NY airport.
best deal ever of my life.