Old-timers will remember Inglenook charbono, another red of uncertain provenance.

A true Ultra, in other words, of uncertain and almost certainly non-Darwinian provenance.

Only one specimen is known, and is of uncertain provenance.

In Britain 66 museums have identified hundreds of works of uncertain provenance.

Artworks from the region, including ones with uncertain provenance, do make it onto the market.

Only a few shark attacks of uncertain provenance have been attributed to the porbeagle.

Some more crudely made vessels of uncertain provenance were also found.

Older short ends or ones of uncertain provenance should be clip tested first to check their condition.

Bottles on the market, of uncertain provenance, are often in extremely poor condition.

As many as 60 such brands of uncertain provenance and quality are believed to be sold in the United States under frequently changing labels.