If you place two imaginary circles against each other, the space in between them will have this form. And thus the Semi consists of three circles of the same size: One horizontal and two vertical, imaginary ones. This lamp from 1967 has often been copied. Changing the dimensions, or adding an ornament. However this is fundamental geometry, which cannot be altered. The condition of this lamp is mint. No scratches, or dents. We have two pieces available. Hang them next to each other and the space in between will have the form of a perfect semi circle.