I just noticed that I used the wrong link in my first post. The link goes to the discovery paper by Longmore and Tritton.
The paper about the bipolarity (shown by a spectroscopic analysis of the shells) is here
http://articles.adsabs.harvard.edu/c...NRAS.347.1370G
Here's a figure from the paper showing the two excentric rings due to the bipolar character of the PN.
LoTr5 Bipolarity.jpg