Info Inside a Watch Back

[martyn]

can anybody supply the codes used inside watches, Is There a Universal code by watch repairers?, it would be good to understand the history of some of the items we work on ,

In a former life I was  a domestic appliance engineer, I have started making a code list loosely  based on the I.R.I.S. system , If anyone would like a copy  just ask , and feel free to modify it but send a copy back  so we can keep the main copy fresh

Would this be a good way to go ? or can somebody help with the older system

I await ALL answers with anticipation

[jdm]

This is often asked. There is no universal code, and not even all watchmakers actually inscribed pieces. 

[WileyDave]

Martyn, as far as AWCI there is/was a standard, but sadly not a "universal" or global standard.