of doubtful provenance

Both museum organizations had issued guidelines in the last year and half requiring their members to come forward with information on works of doubtful provenance.

It's the other guys who try to pass fraudulent traveler's checks or sell a painting of doubtful provenance.

At the same time, however, works by prominent artists but of doubtful provenance were being passed in at auctions.

A fifth volume, supposedly taken from his notes but of doubtful provenance, was published in 1954, long after his death.

Birds' early diet is commercial feedstuff from non-organic, degraded sources, with both grain & protein boosters of doubtful provenance.

He actually "slurped" it up, washing it down with an American chablis of doubtful provenance, and showing increasing signs of inebriation.

A specimen of the nominate population labelled as "Baluchistan" and collected by Richard Meinertzhagen is considered of doubtful provenance.

Smith's reputation among his contemporaries as a humourist and wit grew to such an extent that a number of the observations which are now attributed to him may be of doubtful provenance.

It was like the back rooms of museums everywhere, full of junk and things there is no room for on the shelves and also items of doubtful provenance, such as coins dated '52 BC'.

It is tempting to think of "The Palace" not as a novel but as a glittering artifact, something an acquisitive traveler might discover in a musty Venetian curio shop, an item of doubtful provenance and patina, yet of dazzling workmanship.

Items supposedly worn or carried by Mary at her execution are of doubtful provenance; contemporary accounts state that all her clothing, the block, and everything touched by her blood was burned in the fireplace of the Great Hall to obstruct relic-hunters.

Applied to the conditions of sale on today's art market (i.e. with much concern being voiced, and discussion in the media, regarding illegal trafficking in works of art of doubtful provenance and authenticity) the foregoing test of good faith becomes quite a severe one to meet.