My Ideor is from the early 50s, and it has a clamped-on medallion on the
head tube. I was told by the previous owner that at the time, they were
sold as accessories that you could put on your bike. Never seen any others
like it, but perhaps someone on this list has... Here is a link to a
picture: http://www.sonic.net/
Drew Devereux
Lakeport, Ca