A copy on its own is not a public paper
Nobody stamps a bare photocopy. The stamp you are after vouches for an official signature, and a page run through a machine has none on it. So the first move is to have an official write on the copy that it matches the book in your hand and sign that statement. Only then can you apostille a Passport Copy in Italy, because at that point there is a real signature underneath for the state to stand behind.
Who may certify the copy
Two kinds of official can sign for a copy, and the choice quietly sets your route. An officer at a public office signs as part of state work, which keeps the file on the administrative side. A notary signs as a notary, which makes the copy a notarial act. Readers who ask how to apostille a Passport Copy usually skip past this fork, then find themselves queueing at the wrong door. Ask who will sign, write the answer down, and plan from there.
The two counters in the city
On the facts held for this page the legalisation of a Passport Copy in Bologna runs through the Prefettura, the arm of the state in the provincial capital. It stamps papers that come out of public offices. The Procura della Repubblica, sitting with the court, stamps acts formed before a notary or a judge. It works by district, so the act goes to the court covering the place where it was drawn up. One glance at the signature tells you which building to walk into.
Price of the state stamp
The apostille cost for a Passport Copy in Bologna rests on a €16 tax stamp for the document. You buy the stamp, attach it, and hand the paper in. A handful of papers are let off, so ask at the desk rather than assume yours is one of them. Whatever the official who certifies the copy charges for signing is a separate matter, decided by that office, and it is not part of the state figure quoted here.
Sending a certified copy abroad
Before you apostille a Passport Copy in Bologna, ask the reader abroad exactly what it wants copied. Some want the page with your photograph alone; others want every page, blanks included, in one run. Ask in writing which language the file must be in as well, and whether a sworn version is wanted. Italy has issued apostilles under the 1961 Hague Convention since 1978, but the desk that receives your bundle still sets its own house rules.