Roberto, the 3 you show are not ATM but coil stamps for use
only at Post Office counters.
Of course they are also available at the Philatelic Center.
They are mentioned here in this Austrian stamp forum.
The first post of the thread states as translated by googleSince September, largely unnoticed by the general public, so-called dispenser roll stamps have been in use at the post offices (initially only at a few selected ones). The stamps are not sold at the counter, but are used for franking directly at the counter.
They are listed in Scott and yours are Scott 2695, 2693 and 2723