Non-sapphire something or other headed into Durham on the 22 for 5-ish, but 10 minutes late. Been replaced by 24 branded pulsar. Edit it's 1519 - on its way back into Durham, running on time.
Edit: the mystery one from earlier is 1471. Will arrive in Durham in about 20 minutes, 10 minutes or so late.
RE: Arriva North East: Rare & Odd Workings - October 2015