It's hard to find a spiral with arms this long. Depending on what you're willing to count as a single arm, one of them seems to wrap around almost two times. Upon realizing this I searched around for some other galaxies with more wraps, but couldn't seem to find any with distinct arms. Malin 1 comes to mind, but it's hard to read.
If anyone has any other galaxies with arms similar to this one, let me know.
A color image comprised of DES DR1 data is available:
legacysurvey.org/viewer?ra=351.9539&dec=-47.3811&...
Data from the following proposal is used to create this image:
Establishing HST's Low Redshift Archive of Interacting Systems
All channels: ACS/WFC F606W
North is 29.01° clockwise from up.