What is the significance of Pierce chronograph backs - is there any? Does it give any indication of the age of the watch or reveal anything else?
I have seen press fit, I think I saw mention of a 4 screw back. The one I have just bought has an 8 screw back and is marked waterproof on the dial. Mine seems to have a pretty low case#
I have searched a fair bit, not found much, a couple of threads here, nothing on NAWCC, nothing much on MWR - so any info you can point me to would be great. To be honest I would have thought there would be more online resources for Pierce chronographs given their apparent popularity with collectors. Perhaps I just missed it.
Does anyone have any catalogues or other info?