Project 33 33 Art Unit (AU) Coin "Make Money into Art" UVA RARE piece of glass art history.. Art units are hand made works of art (glass murrini) created by our artist community to facilitate alternative exchange. Each artwork is painstakingly created as a single bar of glass and is cut into slices revealing the image within every slice. The images resemble coins and bear denominations to facilitate trade but the key difference is that they have been created as a gift rather than an iou. These coins are art