That's a pretty cool coin.
A note though on the 55P's. Over the last few years I've sorted about 3/4 of million raw cents. In my opinion THE toughest 55p to find is a well struck example with no die cracks or die issues. I keep all of the best struck coins of each date/mm. And the late 50s are very hard, and the 55 may be the hardest date of all, to find as a well struck coin.