I know... what can I say. Global warming?
But your confusion was upsetting me, so just to make really, really sure, I went back to the calipers and checked again. Same reading. So then I popped the watch into the screw-down press, and with a flat nylon top die installed, put pressure directly on the crystal, just to make absolutely sure it was fully seated. And the crystal cracked.
Only joking! The crystal's fine - but the thickness is still 12.5 mm.
ok let me correct myself: i have currently 2 116520 noob with arf dials, 1 white one with noob gasket which went under
aflop hands to address a way-too-tall crystal and he managed to lower it down to ~12.2
then the black dial had the cousin gasket mounted and it's between 12.4 and 12.5 (my caliper only have 1 decimal)
Confusion, in me, arose from the fact that since 116520 are 12.2/3 thick, as per what google says, i thought 116500 was equally 12.2 whereas, again as per what google says, they are 12.5.
So i presume the construction followed by noob is of the 116500 since it matches 12.5 by right with the correct gasket
PS: where the old steel bezel daytona trim those .3 I have no idea..