At the above co-ordinates you will need to find:
The telephone box number: 01684 A B C 395
The Post Box Ref. Number: GL2 D E F
The cache can be found at:
N 52 02. ( A - B ) ( F - E ) ( B + C )
W 002 05. ( C + E ) ( F - C ) ( D )
The Fine Pair series was originally started by wizardsmum.
If anybody would like to place 'A Fine Pair' of their own please do, I would just ask that you let mattd2k at email@example.com know first so he can keep track of the numbers and locations to avoid duplication.
He also keeps a public Bookmark List of this series so once your cache is published please contact him via his profile page to have yours added.