I am tempted to call them tie bars.
Resist temptation! Unless you can use them to hold your necktie flat to your shirt front without strangling yourself. I've always considered tie bars to be longer versions of tie clasps. They go best with the wide painted ties from the 40's.
Steve Stokowski
Stone Products Consultants
Building Products Microscopy
10 Clark St., Ste. A
Ashland, Mass. 01721-2145
508-881-6364 (ph. & fax)
http://members.aol.com/crushstone/petro.htm