Submariner model changes

[golfsferr]

Hi everyone
I'm looking for a comprehensive Submariner model year change guide. Not just a list of the different serial numbers and model number classifications, but a visual guide of the changes made from year to year like the Uxxxxxxx serial number series with the solid stainless clasp to the one with gold in it to complete the gold in the bracelet. I've searche the net and I can't find anything that comprehensive. Does anyone here know of such a thing?
Thanks in advance.