I would say that to me this has the ring of an urban legend or hoax...
Let´s just look at it:
Your aunt is an antique dealer and she recently got an assignment to sell some paintings for a couple which may or may not have been illegal
immigrants to Canada. They give her a couple of paintings to sell for them so they can get some cash.
Now she sees that one of the paintings seems to be painted over *another* painting, which btw is not that strange, even Picasso reused canvases:
arts.guardian.co.uk...
And this is where it starts to sound like a hoax or Urban Legend...
Without even asking the clients (this is the only explanation I can see on how you retold the story "....the owners took one look at the painting
and...left in a hurry...) she strips off the upper layer of paint. What antique dealer would do that to paintings she has been assigned to sell? For
whatever I know she could have ruined the whole thing.
"Hi clients and potential illegal immigrants to Canada, this is Aunt whatever-my-name-is speaking, you know the antique dealer to whom you left some
paintings to sell.
Ummm...I tried to remove some paint from a canvas and now I accidently ruined the whole thing. I hope you are not mad at me?"
And besides, this isnt something you do on your lunchhour either from what I understand and probably you must be an experienced curator to pull this
off so you dont ruin the painting.
But lets play with the thought that your aunt indeed is a skilled curator in her sparetime and she just doesnt care that the painting isnt hers, but
the clients.
She removes the upper layer then and - lo and behold! - there is another painting underneath. And your aunt (and the local clergy, which of course is
a worldrenowed antique painting expert) swears that this must be a painting of Jesus after the resurrection?
There was no signature and it had been previously repaired and now she asks if it is authentic? Authentic? What does she mean authentic? if it had
been a copy of some great Master or in a Master style, the question would have been valid (Like in "Is this an authentic Picasso? Is this an
authentic Da Vinci?") but now it is not, since the painting was without signature and you dont mention that it was painted in a certain Master
style.
So this sounds to me just too much of an Urban Legend or hoax, probably the latter...
// ka