Looking for opinions on parts and authenticity.

Here's what I know:

Top pusher is a replacement, scratches in the sub dials & chipping at 5 & 6 oclock as well as a missing lume plot at 9 o'clock. Wondering if silver or black (Ideally) dials come up for sale from time to time? (approx cost)
Lume on the hands looks old but different than dial lume. Value loss due to these imperfections?
I've looked at what good examples of the silver dial .005 have sold for (2800-3200)
I ask because I'm being offered a trade for a 1603 Sigma DateJust
Thanks OF

 

Nice watch! Lume dots can obtain a different colour over time as the lume is applied thicker than on the hands. The missing dot and the dial imperfections are of course not nice, but I would rather try to have the dial professionally restored (i.e. at Causemann) than to look for a new dial. But I guess you could offer about 2.2k due to these points

 

I think Causemann is doing a good job, but what should he do here? The dial is ok and should not be touched. Otherwise, the value of the watch is destroyed.

 

I would do it! I might be interested in buying the 321, if you decide to trade. Otherwise please send me contact info

 

Did you buy it?