I have taken possession of three Guernsey overprints, a Mahon B212A, a Catterns B225A and a Peppiatt B239A. The Mahon and Catterns are extremely rare banknotes. Pam West on her website outlines the serial numbers and prefixes for all known overprints. It is the most remarkable research done by her and the others she mentions. The reading of the history of the notes and the listing of the individual notes is just wonderful. I shall be listing the notes over the next few days but there is no doubt the information provided by Pam West is valuable, detailed and essential for anyone buying these notes.