Send the serial # to Bing @ “Bing Copeland [bcopeland@sunvalley.net]” he will give you a birthdate. Take a look at their website, lots of great info and pictures. www.classicbingsurfboards.com
Check this out, our vintage 9’9" lightweight had the wrong fin glassed in, Gene had a glass on to replace it. These are for fin boxes- the ligthweight fin is the dagger/pivot fin. Enjoy.