That's a very interesting discussion, I recently bought a nos daytona fume dial which was serviced by Hans Schrag, interesting is that on the back case in addition to the matching ref number you'll find the B for blue or (brown ?)> which is identical to my blue dialed one.
Hence my question is: does anybody know more how many fume dials were produced ? Was color coding different on the backcase ?
Any feedback very much appreciated!
BR
AMH