Bronze seacock ID
I am trying to identify this seacock in order to properly maintain/use it. Can anyone give me a manufacturer/model? It has a grease fitting (the nipple is just visible peeking out the right side of the seacock in the left hand pic) and a set screw on the bottom (not sure what the set screw does, so advice on that as well would be appreciated.
It is on a '78 MT 38 DC.