G&S twin fin

Just picked this up off craigslist today.  Just wanted to determine age and any info you guys might have about the board.. also curious as to the value

 

6'6" and #7748 no signature

 

thanks in advance

justin

 

[IMG]http://i593.photobucket.com/albums/tt12/fishy82/dogs047.jpg[/IMG]

 

[IMG]http://i593.photobucket.com/albums/tt12/fishy82/dogs048.jpg[/IMG]

 

[IMG]http://i593.photobucket.com/albums/tt12/fishy82/dogs049.jpg[/IMG]

justin, pull one of the fins out and take a pic. I believe that systems is called Star System, if so that board was made between 1979 to 1981.

Mahalo,Larry