From memory (I'm at my workplace at the moment), the Aulica release was produced in Italy.
My information is that at the time, Italian copyright law allowed free use of fifty-year-old recordings (as did UK law) and also free use of recordings of live performances which had not been officially released as long as they were thirty years old. Thus, a 1994 or 1995 release of such material was lawful in Italy - and as long as it is a copy produced at the time, still is legal. Retrospectively-active law is generally held to be incompatible with the European Convention on Human Rights.
All that has happened in Italian law since then is that it was brought into line with copyright law as it then was in the EU generally: essentially extending copyright on (unissued) recordings of live performances to fifty years.
Even after the recent extension of UK (and EU?) copyright to seventy years from release, recordings of unissued recordings (including live recordings) are still limited to a fifty year copyright period, hence the very recent release of a number of Beatles AVs, out-takes and live recordings which were fifty years old, thus extending their copyright life by removing them from the "unissued" category, crucially before any official release of the material by some record company acting lawfully.
HTH.
JN


