After the artist passes these are the guidelines used by

the art market to determine values.  If these things are

being done, then this artist's reputation is being managed

properly and you would be well advised to wait quite some

years to see what transpires because, in many cases you

will see significant appreciation on these works.

I have also seen artists whose family sold off the

remaining artworks at whatever they could get.

These are both good times to sell your artwork of the

deceased artist. Of course if you still love the piece just like

you did on the day you bought it, then keep it because it's

important to you. Let your kids or grandkids decide it's

future destiny.