A puzzling little number up the center of the left hand wall

Lewis Andrew 07/Aug/09 Sent O/S
with Fred Prall, Johan Gausden
simozzer 23/May/09 Sent x

Glad to finally get this one worked out after so many dismal failures last year.

Hidden ??/2002 -
High f6A+
Mid f6A+
Low f6A+
High f6A
Mid f6A
Low f6A
High f5+
Mid f5+
Low f5+