Pirate, DS and Uncle are correct. Dear Sir/Madam etc requires Yours faithfully
Dear Miss D etc should be Yours sincerely.
Dear Auntie should be Love from
Sven should be Yours pantingly or if you follow Nick's advice Yours pantyless
NORWICH = Knickers Off Ready When I Come Home. (Commonly used by soldiers etc when telling wives/girlfriends that they were due a weekend pass but war time censorship prohibited them actually saying so.
See also SWALK = Sent With A Loving Kiss
ITALY = I Trust And Love You
There were others but I can't remember them now. GOS will know them all I have no doubt