I was just taking another look at my 1963 wavy exergue , and have noticed something overlooked at the time , because we were all to distracted looking hard at the wavy exergue. The 9 has a squared off chisel like end to its tail, and also that the circular part of the 9 is squared off at the bottom. A second pic in different light shown below . has anyone else got another one with this feature on it. Terry