I'm not an expert on IWC but the case looks over polished to me and the picture of the movement not close enough. You need a closeup of the movement, inside of the cashback to show the reference number and the dial. Then use the ref. number to compare with online pics (of the dial) and check it's the correct one and hasn't been repainted. Use this applet to check and date
http://moeb.on-rev.com/dyIWC/dyIWC.irev
Good luck.
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