On the facts sheet;

http://www.pearsonariel.org/document/Fact1.htm

A large genny is show , which is it ? By sheeting angle , block placement and posistion of clew it has to be larger than a 155 for #76 as Bill has shown in photos 14 & 15 in the thread ;

http://www.pearsonariel.org/discussi...read.php?t=970

By it being on the sheet , I would assume it is an "official" sail by Alberg himself.