All Carreras in that case should have fluted pushers, whether automatic or manual, right up to the point when they start using a cut-down version of it for the quartz Carreras - those have smooth pushers.

It might be worth summarising. I'll use the same sections as we use in the table for clarity:

60s style case (Sections A, B, C and D): smooth pushers

70s style case (Section E): fluted pushers

Barrel style case (Section F): fluted pushers

Quartz case (Section G): smooth pushers

Lemania case (Section H): smooth pushers

There aren't any model exceptions, so it's pretty straightforward to know if the pushers on a watch are correct or not. We do see both styles of pusher for sale from time to time, so it is still possible to get the right pushers on the watch.