Looking for some info on this CON board

Picked up this board from my uncle who said he used to surf it at Huntington in the 70’s.  I don’t know anything about it, except it’s a lot of fun to ride.  Works really well on the big days!  Anyone got any info on this? 

 

 

 




Picts attached




First thing I noticed, was that it's invisible!

Edit:  Thanks for posting the photos.