Vintage Bokeh

All these pictures are taken with a vintage lens. I've got three of them: Pentacon 50mm f1.8; Helios 44m-6 58mm f2; Trioplan 50mm f2.9. I modified my helios lens by taking out either the back or the front element and turn it around. If you do it with the front element you get this crazy swirly bokeh.