AlexanderG, the situation is incomprehensible, need more information from the widow .. And the question is not addressed on the phone, and with receipts (and with "Lucy") gelereyu go in there and all the details again with the owner of all galleries to discuss: where the paintings that he sold, who received money for the sold paintings, where the disbursement vouchers (if the money were given, if nalom is already the problem owner), etc.

Evgenii, poskol'ku etoi galerei bol'she net, to eti voprosy sloznee reshat '.

It remains to apply for one-owner of the gallery in the court. And it all depends on many factors. If you change the details of the owner had to notify all and rewrite the "receipts" - documents otchetnosti.V any case not rewritten to be kept as proof of legal residence of pictures in the gallery. It is important how long proshlo.Odnim word - need advice of counsel with regard to property disputes.

Added after 4 minutes
This is the most stupid thing you can do in this situation

The owner is the former, but considering that the pictures of expensive (by famous) .. You are right yet difficult to say something, as a matter of mind.
But any widow must necessarily meet with the owner of the gallery, and then (depending on the outcome of the meeting) to decide.

And what information can be from the widow ... she just has this worn piece of paper in his hands and all .. I myself its nevidela this receipt. But it is a decent man so to doubt her words to me there is no sense .. And then she told me Name of gallery owners and called the old name of the gallery which is unlikely now, who you remember .. I was advised to congress of the place, well out of respect and may the memory of Sergius I sezzhu ney.Ot with myself, I have decided to write here, hoping that they realize that there is someone to stand up for her.

This is not just a "piece of paper", but a legal document which bears the signature of the owner of the gallery .. and it is very important "piece of paper."

Properly done, let them know that apart from formal problems, police prosecutors, etc. there is also a bad reputation and bad reputation. Much better to resolve amicably arising pritenzii previously understand.

Lucy, ugly story.
I think the gallery owner is not quite sure what to him may be pritenzii from the heirs of the deceased artist. Pritenzii reasonable and related to money for the painting. This is a very ugly situation, very.
A gallery owner for a long time in the art business, and as if in a new way not to say his gallery, he is a well-known and his name pops up in after all.
And how he would respond to the questions of colleagues?

Lucy, I think that you can already send his mail a link to this topic. Let him read, think and prepare for the next call widows.
Now everything is still possible to solve polubovno, without noise, without publicity and without nemenuemogo zhirnyuschego stain on the reputation and even the name already.

While there is time, then play back will be too late and impossible ...

Added after 54 seconds
SAH, at the same time think of one ... :D

Add - well, if it contains a full list of pictures put into galereyu.Ne know exactly Russia's legislation, but the heirs of such a receipt can submit claims and the new owners of the paintings, if they are somewhere shine.

On human decency!
 

Let pomotrim at the situation differently ... a woman comes to the gallery owner and said "Give me the picture of her husband ... Here's the receipt ..." Looking at her gallery owner in full Moroz said that he neither she nor her husband did not even know ... if it is a thousand times wrong ... it does not prove it.

First we have to prove that she was his legal wife, not mistress, and at the time the picture was legally married ...
Second, whether the paintings exhibited in gallery originals or not .. who will do ekspertizu ... gallery owner will tell - this is a copy ... (at best), then what?
And .. Receipt ... who and what proves that her signature on the owner of the gallery .. .. Hold handwriting examinations too expensive and who is going to do it ...
And the owner to appeal to the mercy of decency ... seems useless ...