OP8ON = SES WW1 Centenary 

Only in month November, 2014 till 2018

OP = Special Prefix for Poppies 

Poppies are the only plants which still blowing on the destroyed grounds
when nothing more grows like that was the case on WW1 battlefields around Yser.
The poppy was the object of a poem " In Flanders fields " of  

Lieutenant-colonel John McCrae
and became the symbol of the World War 1

https://www.qrz.com/db/ON8ON