Hi,
I've found this cal. 88 with serial numbers dating it to ~1953. After some research, I have not seen a dial quite like it.
I would say some of the hour markers seem a little misaligned compared with the minute markers. The sub-dial has a little snailing as well. Other than this I think the dial looks good, but I am far from an expert on vintage IWC.
Any remarks/information on the dial authenticity and/or signs of repaint is much appreciated.