MedcinMN:I have a TT Submariner Serti, K serial# and it does not have it.
Pauleypaul,I have Z-series Sub, SD and Air-King, all with crown, all the same size. My 1991 GMT II 16710 also has it, so if LarryD is correct my GMT may have a service replacement crystal to go along with the new bezel.
Timefinder,On my LV (Z series) I can hardly noticed it, unless the light hits it at a certain angle. Quite ingenious on how this works. I can't imagine anyone with a white face dial trying to find it on their watch.
It took me a long time to find the crown on my M series GMTIIC. I have a loupe but it was just too hard to get enough light on the crystal with my big head & loupe in the way. I finally grabbed a magnifying glass from my son's room and located it. The magnifying glass set me back a bit and allowed more light in.Timefinder,
I could never manage to find a crown on my SS/PT Yacht Master. Until .. my 8 year old son bought himself a "Crime Scene Investigator" kit, which contained a small plastic magnifying glass... Well, I couldn't pass that up.
So now I found it!! :biggrin: I showed him where to look and he found it too.