Taken during the mid 1960s - this would be the Hexham machine when on standby at Wallsend during a ten pump fire. Note that this was before Northumberland got blue beacons.
There were only half a dozen of them as you know. Give me a minute and I'l find the unique shot of two together on standby at Walsend (as ETs) during another 10 pump job in pre-merger days.
Added by Dave Merrin on 12 January 2011.