More generally, let us not forget that the existence of information about provenance is secondary in the whole discussion of fakes.
It is never decisive.
Genuine old books may or may not have a known provenance. In most cases, provenance information is patchy.
Fakes have no history and are very likely to have no realistic provenance.
This means:
No provenance? Nothing can be concluded.
Provenance information available? Much less likely to be a fake.
Provenance is secondary.
Fakes are detected exclusively by inspection, analysis and testing.
It is never decisive.
Genuine old books may or may not have a known provenance. In most cases, provenance information is patchy.
Fakes have no history and are very likely to have no realistic provenance.
This means:
No provenance? Nothing can be concluded.
Provenance information available? Much less likely to be a fake.
Provenance is secondary.
Fakes are detected exclusively by inspection, analysis and testing.
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