I happen to have an IWC Ref. 2403, which is the same watch without the integrated bracelet:
View attachment 987962
View attachment 987963
However, mine came with the same guarantee book and the box:
View attachment 987964
It’s a simple green box with IWC in gold leaf on top. The bracelet I have is the optional branded Milanese, which was available in Japan at that time.
The thin, plain crown is correct for this watch as it is not waterproof. Hence, no fish.
Hope this helps,
gatorcpa
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