John - Here is what I have from Sun Cruises. Sun Cruises was founded in 1957 and the company's flagship Stella Solaris joined the company in 1973. Royal Olympic Cruises was created by a merger of Epirotiki and Sun Line Cruises and was taken over by Louis Cruise line in 2000 but demerged again in 2001. I think Sun only has the one ship now. There is also a Sun Line Cruises but it is more of an adventure cruise line.
That sure is a beautiful piece. I have over 1,000 different cruise chips but don't have one jeton in the bunch. Do you have many from cruise ships?