What's going on with this Jean-Jacques Henner

I was at an estate sale of a elderly man who passed away.
He had been an antique dealer and auctioneer for many many years so his house and out building was STUFFED.

Prices on all the furniture was out the nose so I was forced to focus on smalls.

Above the door of outbuilding hung this picture.
Originally I thought she was nude but she is wearing some sort of undergarment.

Right after I bought it I had a man approach me trying to buy it from me. Not sure of what I have I politely declined.

Looking further into it it seems to be an engraving from Henner's original oil on canvas
Ive seen it called Solitude, Madeleine, and Mary Magdalene.
There are differences in the original and in mine, for example, his are actual bare breasted.



The original sold here for $57,000 and they call it MARY MAGDALENE
http://www.sothebys.com/en/auctions/ecatalogue/2007/19th-century-european-art-n08303/lot.28.html


Anyways, I was wondering if someone could tell me what I have and how to safely remove the grime from it..

 

The lines in some of those images do not exist, i guess with the light my camera picked up something weird.

Anyways, I started second guessing if it was an engraving or a print so I took it out and broke out the magnifying glass.
I also took a picture of the back.

 

It looks printed and not hand done to me.

 

Hi,
You can try a cheap soft white bread to crumble the dirt off.
greg

 

I started thinking that, til i saw the next to last photo, there seems to be some inconsistencies?

 

I don't know the process name (rotogravure?), but it looks like a standard turn-of-the-century mass market reproduction. I wonder if the interest was in the frame.

I'd say she's as bare breasted as in the painting, but the image was altered for a conservative morality.

 

Might be a collotype, which is an old photographic printing process. Rendered obsolete by offset photographic lithography.

 

It's funny sometimes what the camera will pick up rather than the naked eye. I get those lines and textured spots when I take a close-up of an illustration in a book. So agree with some type of antique reproduction process. No expert, sure other's know here.

 

Might be stone printed. Youtube has some videos on this.

 

I have come across a similar Print I assume, what can I do to figure out what I have ?Don't even know how to send pictures? Lol

 

It is what happens when something made up of dots (a print) is digitally photographed, the dots of the original image and the pixels that make up the digital photo line up in such a way to cause those dark areas.

 

For those interested a https://en.wikipedia.org/wiki/Moiré_pattern

It's why you don't wear narrowly striped clothing (particularly contrasting colors) on video.