Sark's first Letterbox/Hybrid cache - so please don't remove the stamp in it. It's not a swap! - which you should treat as a simple offset multi. The co-ords above will take you the the highest point on Sark; the windmill. Here you'll find some features which will send you the right way to the cache.
Take the date from the weathervane on top of the tower -you will need good vision, binoculars, or use your digital camera's zoom and then zoom into the picture for a clearer view- and use it to calculate A, B, C and D where:
A is the second digit, minus the first and last digits.
B is the last digit, minus the first.
C is the third digit minus the first.
D is the first digit plus the last.
E is the number of large vertical panels in the tower door seen from the foot of the steps.
F is the number of steps leading up to the tower from the lane.
The final may be found at: N49° 26.ABC W002° 2D.BEF. It's approx. 20mins away, or 10 by bicycle, on a footpath with a nice view - but then they all are on Sark, aren't they? Good luck!
Please reseal and rehide the cache with care.
My other Channel Islands caches:
Jersey (well, south of): Capt'n Simply's Pirate Booty.
Guernsey: Bridging the Divide (St Sampson/Vale, Guernsey).
Sark: Arks (Sark, CI) - Here!
Herm: Smirfe Hole (Isle of Herm, CI).