Help on identifying lineage of Jacobs Pig

Found this in the rafters of someone’s garage in Milwaukee earlier this year and looking to get some lineage on it.  I’m in the process of restoring it and taking my time, but have not yet gotten specifics.  The owner said it’d been in his garage since the mid 60’s when he moved back from California.  Also, the board itself is fairly heavy and sounds hollow.  When I got it there was a one inch hole on the rail toward the tail and there was no sign of foam.  Any thoughts?