If We Limit to 141 100s and 200s, We Have Only Four Watches . . . so I believe that the 300s should be original, and even the 400s.

The 500 guy does seem like something of an outlier, especially as we have a "standard production" Siffert starting at around 141 450.

Jeff

+++++++++++++++++++++++

: Rich don't twist my arm, Chronomatics are very difficult
: especially since during the last years prices have risen and
: dials have resourfaced.
: I personnally believe in the earlier numbers and the early first
: series case features which are pretty evident to see at least in
: metal.
: I am sure that Jeffs watch is original as was mine in the sale
: first owner with all the paperwork. The other watches you have
: mentioned I don't know.
: Best Arno