Help with L.N.E.R Plate ID

Hi,
Good morning I'm new to the forum and was hoping that someone could kindly help me to ID the Plate that has just come into my possession.

L.N.E.R 21 Tons 1944 Darlington 260555 as per photograph and it measures approx 27.5cm x 17cm
Many thanks for any help.

 

It is London North Eastern Railway, probably off a large wagon maybe a brake van. The number is the number of the wagon so if you checked in some books about LNER wagons for the number and tonnage you should be able to find the type of wagon. It isn't worth a huge amount of money.

 

Thank you very toplight that's very helpful, i'll scour the internet for more info. thanks again for your time and help, much appreciated.

 

That number may be for a 21 ton Hopper wagon.
Either coal or minerals not sure which.

 

Thank you very much for your help, much appreciated.