I'm not sure what you mean either. As far as I can tell, issue 1505 has both 31 Dec 2018 and 7 Jan 2019's charts, then there's an EOY issue which isn't numbered, then issue 1506 is 14 Jan 2019.
But if they did repeat a number, then perhaps you could say it was an extremely belated make-up for when the combined 27 Dec 2004/3 Jan 2005 issue was given
2 numbers (774/775)
