One of the guys at the marina loves those old Egg's. They have an owners club:
http://www.eggharborowners.org/
Pretty boats, I'm not a big fan of the 80's ones though. I worked on a 40 that had scary flybridge cracks.
List it in Soundings, Yacht trader, or with a boat broker. I have no idea what those go for on the used market. Old gas sportfish tend to be very hard to sell and go for very cheap. My grandfather almost donated his Chris Craft.
What kind of Egg are we talking about? Is it wood? How did you get that thing out to Bermuda with gas engines, tow a tanker?
What is it a 48?