The message addresses you by your first name which is usually a clue it has come from eBay and seems from days past they owe you 52 pence.
To make sure it has come from eBay contact Customer Services. They can advise how to withdraw the 52p too.
This is the easiest and quicket way to contact eBay Customer Services, for a Call Back option.
https://www.ebay.co.uk/help/eua?id=5275&mkevt=1&mkpid
Lines open between 8 a.m. to 10 p.m. on weekdays.
9 a.m. to 6 p.m. on weekends.
I recommend contacting CS very first thing in the morning, when the lines first open, as there's more chance of Dublin answering.
@mcsparron