LBBG 'Dutch intergrade' KT1 in 10cy, May 23 2002, Maasvlakte, the Netherlands. 

This colour-ringed adult was ringed as a pullus on July 07 1993 (now in 10cy) in the Netherlands and returned to the same place to breed. The orange ring turned greyish after the years. Note the shape and size of the p10 mirror.