1996 (10) Christmas - 4d Post - BBC Look North Slogan

Unusual 4d Post cover with the BBC Look North Slogan, but then the rest of the stamps have been cancelled by a very unusual NE/SR cancel...

NE stands for North Eastern, but I'm not certain what the SR stands for - whatever it is - this cancel is highly unusual... I've never seen it on anything else...

Code: 55610