The Museum of Fine Arts, Boston is receiving a major gift of 186 works seized by Nazi forces in 1938.

It’s taken decades for the donor’s family to recover the famed collection that includes fine jewelry, rare books and paintings. The objects have taken a fascinating journey between Vienna and Boston.

One of the confiscated works is a Dutch painting of a man on a horse titled, “A Dordrecht nobleman on horseback with retainers and grooms.” But instead of focusing on the front of the canvas, MFA curator of provenance Victoria Reed points to numbers and letters on the back. They’ve been drawn, etched and stamped onto the painting’s wooden stretcher.