Mike & Martin,
Indeed, it is strange how much unchartered Titanic material is still out there. My position, as Secretary for the British Titanic Society, often means that I am approached by people who have Titanic related items that they had not "until recently!" realised was of any interest, let alone value. I have been fortunate enough to obtain some of these items for my collection, and, of course, seen many more heading towards the auction houses in both Great Britain and the United States. There are still masses of letters, postcards etc. mailed from Queenstown to addresses here in Britain, which relatives are still keen to keep hold of, no matter what their value. It seems that every month, letters and photographs turn up in boxes which have not been opened for years. My last purchase was a swimming medal awarded to third class passenger Edward Lockyer - inscribed on the reverse "Lost in the Titanic Disaster April 1912".
Other people's cast offs etc.........!