1973 Bing Bonzer

Anyone know the value of a 1973 Bing Bonzer ,shaped by Mike Eaton,No serial # Bing himself looked and handled it and said that Mike did shape it and never put serial #'s on any of the bonzer’s,not in great shape ,I can fix the dings on nose and tail ,it is not water logged,No original fin but will include a 1970’s 6 inch with it,the fin looks like it could be a rainbow 

I can’t tell you the monetary value, but the surf value is priceless.  I borrowed a friend’s brother’s Eaton/Bing bonzer back in the 70’s and had one of my best ever sessions at Malibu on it.  I asked if he would sell it but it was not for sale.  Over the years I kept asking and the answer was always no.  I wonder if he still has that board?  Anyways, they surf phenomenally in the right condition (like low tide point break).