Thanks to all of you who have posted all the beautiful bikes in this thread.
Disclaimers
Not a real track bike: built by Nagasawa as a "practise" bike or road trainer.
Not vintage: sold by Yellow Jersey in about 2005.
I bought this bike from @
Vonruden a few months ago, made a few minor changes, and have been riding it quite a lot. This is my first ever fixed gear bike and I'm having a blast with it. 46/18 gearing allows me to ride the local rolling hills and gives me as much workout on a thirty mile ride as I get on my geared bikes on longer rides with steeper hills.
Brent