I have an old steel Cinelli 2A track stem for sale. It's the older-style stem with the top bolt. A nice bit of kit and (I hope you'll agree...) perfect for an older track bike. It's stamped 'Cinelli Milano' on top, dating it (rather vaguely) somewhere between 1950 and the 1970s. (This site gives a lot more info if interested in the history: http://www.43bikes.com/cinelli-bars-stems.html)
The chrome's a bit flaky but it's a sound stem. Measured centre to centre, I make it approx 90mm. Here are some pics of it mounted to my Roberts (taken from my Velospace). I don't have a camera at the moment but I could probably sort one out to take more detailed pics if necessary. Pick-up in E3 or N1 preferred but I can be flexible as I go all over.
I'm open to offers (or possiby swaps but I'd prefer cash).
Thanks for looking!