Originally Posted by
datlas
Go to ebay and search "cinelli stem".
Nitto is ok too.
You may get a more receptive audience in the C&V forum.
You may also wish to get an adapter that will allow you to use a modern stem, they make those too!
Most older cinelli stems are 26.4 which will only work with cinelli bars. They did make some 26 mm a1 stems but don't trust ebay sellers, you will probably get a 26.4.
Here is the first of the new release of the a1 stem that just came out.
http://www.wiggle.co.uk/cinelli-a1-quill-stem/