1940's US Navy Rivet Set

I don't have any photographs of this set.  The box/case is made of wood, is approximately one and one-half inches thick, approximately four and one-half inches tall and five and one-half inches wide.  It contains the complete set - rivets and "the things they screw into" that then went onto the rivet gun (I don't have the gun).  The case is stamped/burned on the front as U.S. Navy Rivet Set (approximate wording, I'm not looking at it so can't give specific wording) and the inside upper lid contains the original chart of sizes, etc., in the box.  This was my paternal grandmother's rivet set; she is now deceased so I can't ask her any details about it. 

Good