There’s a bunch of them. Using Delta21’s “Big One” link at post 4, you can see a neat asterism of six yellow stars above and left of the comet’s nucleus, that looks like an inverted hockey stick. Rodamala’s barred spiral is just below the blade of the hockey stick. If you use the two stars that form the blade of the hockey stick as pointers, track right just past the dust tail and you will see my edge-on spiral. Just below that along the edge of the comet’s tail is another smudge that looks like it could be a classic spiral.