Help ID, Italy

Hello, 

Please help me identifi two coins from Italy.

16mm, copper

19-21 mm, copper 

1. Mantua, Francesco II. Compare the reverse image + lettering with these ones:
N#319888 and N#538644.  Although I couldn't find this smaller denomination, copper coin in Numista.

2. Maybe Bologna? There are similar coins with the double keys (N#489874) and with the crowned eagle (N#481868).

Thank you very much,

I will continue my research.

N#182924

N#135192

Good catch. The Mantua Quattrino didn't come up in my search.
I usually filter out everything except the circulation and circulation commemoratives, which backfired in this instance as it is not registered as a standard circulation coin. Opened a change request to fix it.

I just happened to know that section of the catalog pretty well, so I recognized the devices and thought I recalled some smaller coins with them.

The l'Aquila type is interesting because of the politics and that it can be dated to 1485.

Thank you.