I thought that ebay Ideale 43 looked a little strange, so I dug out one that I have. Apparently there were different versions of the 43. Note the side stampings in the two saddles. I have no idea which one is correct on the Schwinns.
Here are some notes that I gleaned from the Schwinn Reporters concerning the Varsinentals;
5/60 Varsity 8 speed debuts.
6/60 Varsity 8 speed is equipped with an Ideale saddle.
8/60 Continental & Varsity parts list. Conti saddle is Ideale #43
6/61 Varsity becomes a 10 speed but still has Simplex derailleurs.
Continental gets Huret Allvit front & rear derailleurs both cable operated with downtube shifters and the newer paint & decal scheme.
2/62 Varsity now has Huret derailleurs and gets price lowered to $66.95(zone 1).
7/62 21” and 23” Continental will get centerpull brakes for the Christmas Dating Program beginning late August.
12/62 All derailleur equipped lightweights for the the ’63 model year will get a new shorter upright frame geometry. The Sierra will replace the Super Continental. Varsity now has 27" wheels.