RMS TITANIC Honoring The R.M.S. Titanic (2012 St. Vincent & The Grenadines plate block containing a sequential set of five mint & unused $1 stamps commemorating the one hundred year anniversary of The Titanic disaster, complete with individually numbered certificate of authenticity from the International Collectors Society. In case you're wondering why so there were so many Titanic stamp issues, the RMS before Titanic stands for Royal Mail Ships, as it was also an official UK floatingPostOffice!)