Two things make this painting interesting.
The first is the painter's signature. Handwriting analysis confirms that it is not a forgery; it reads "Adolf Hitler." No such painting is known to exist; indeed, the 1909 date coincides with the period in which Hitler had been rejected from art school and was nearly penniless on the streets of Vienna. It is exceedingly doubtful he would have had the resources to afford a canvas and painting supplies.
The second notable characteristic is a small, metallic, blinking box on the back of the painting, attached to the backing board on the frame. This box appears to project the electromagnetic field surrounding the painting, extending from the box in all directions to a radius of 40 cm. This force field is incredibly sophisticated, and has yet to be disrupted by any known means. Contacting the force field with bare flesh produces a numbing, tingling sensation that disappears as soon as contact is broken. The painting levitates in the center of this force field, and anybody wishing to move it will probably find rolling it to be the best option.
It is likely for the best that the energy field around the painting cannot be disrupted, as it is the only thing separating our atmosphere from the antimatter air bubble and painting within. Contact between the molecules of our universe and the antimatter molecules inside the energy field would prompt an immediate and violent reaction, probably somewhere on the magnitude of the 50-megaton Tsar Bomba detonation, if not more.