Frequenta Pulsar 1435 replaced defective Streetlite 1560 on X4 earlier.
Temsa 4707 following right behind 1435 on the X3/X3A.
Meanwhile, Sapphire 1573 was on 64/64A! and Temsa 4721 on 63.
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Arriva North East: Rare & Odd Workings - February 2018