New information: I just spoke to the owner of this watch and he says the dial
is original despite the lack of a "Schaffhausen" signature. I did some
research using IWC catalogues from the late 40s and early 50s and I found
other examples on other models (not cal 89s though) where there was a lack of
this signature (see top photo). I also found a photo of all the various dials
and number fonts used during that era (see bottom photo) which now gives
credence to the funky "2" font used on this watch. Regarding the hands, the
owner said that the second hand was clipped due to damage.
I guess I can live with the shortened second hand, but I will be tempted to
find an original hand to replace it. I'm not sure how expensive that will be.
However, the price of this watch is far below the market price of other cal
89s. Essentially, I can buy this watch for the a modest premium over the melt
price of the 18k gold it contains and for the price of selling the cal 89
movement for service parts.
Nonetheless, it seems obvious I am trying to talk myself into buying this
watch. I need you, the more seasoned IWC connoisseurs, to ask the tough
questions and bring up the issues I have neglected. So what am I missing here?

