Brunozetti litho 9x12 last supper price?

I have the orignal brunozetti last supper painting, and I would like to know the value of it. The date on it is 1836 I also have an oil painting of Brunozetti's "last supper" that was my great grandmothers. It hung in the living room of my grandmother's home in Italy and then was passed down to my father mine is not dated and I am afraid to look on the back as the nails are nailed through the wood backing and I wouldn't want to ruin it.It definitely is an oil painting and it is starting to crackle on the canvas.

I cannot find any signs that this has been a copy it sure does need a cleaning though and some minor repair any information would be greatly appreciated.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.