A similar problem exists for large parts of Germany (mostly former East Germany municipalities). The answer is simple. Think of these objects as members of a collection owned by "living history municipal museums". So the city hall is the list owner and you go back in time to the latest usable list (usually made up before WWI during the period 1890-1910 when it was suddenly fashionable to make inventory lists of heritage sites).

On Sun, Jul 26, 2015 at 1:13 PM, Federico Leva (Nemo) <nemowiki@gmail.com> wrote:

Jane Darnell, 26/07/2015 08:42:

Meanwhile, we should be migrating the entire infrastructure to Wikidata
to enable the next generation of tooling.

As is well known, Italy has no official list of cultural heritage items and in general no functioning way to discover, document or use cultural heritage.
https://meta.wikimedia.org/wiki/Italian_cultural_heritage_on_the_Wikimedia_projects

Therefore, WLM-IT lists are hand-made with data shared voluntarily by the (few hundreds) supporting entities and use self-made identifiers. How can such a thing fit in Wikidata?

Nemo

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