<...Sorry I can't help you with dating...> snipped from: The next version should be stem number 1, which I believe also has the serrated clamping area. The most modern version is stem number 2. Sorry I can't help you with dating.
Steven Maasland Moorestown, NJ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ always call the next day. they love the extra attention. e-RICHIE
Richard Sachs Cycles No.9, North Main Street Chester, CT 06412 USA http://www.richardsachs.com Tel. 860.526.2059