Hyde streamstay 1
Porter, you almost certainly have a Hyde Streamstay 1. That's what on my 79 H33. Here is a link to info and parts for the furler. http://www.rigrite.com/Furling/hyde/hyde.html. Bearings used in the top and bottom swivels and in the halyard swivel plus seals can be found also from bearing suppliers. If it has been more than 3 or four years since the bearings have been rebuilt, probably a good bet they should be replaced. When I overhauled my furler last fall, I found the bearings in the lower swivel which gets most of the spray were in really scary condition from corrosion.
