Classicwatch Vintage Watches

Hi Everybody !
I've just got my first E873 Speed Beat and it is missing one crown.
I have measure the diameter of the crown that is left, and it is 6mm, but surfing the web I find different diameters: 5,8mm 6.2mm and so on.
Does somebody know the part number of the crowns for this JLC reference ? Or where I can find this information?
Thanks in advance!

I do not have the specs of crowns cataloged for each model. 6mm is however correct. A 0.2mm difference passes. They're not the same, but it's hard to notice.

Hi Zafbasha!
Sorry for my delay and thank you for your reply.
Then I will try to get one between 5.8mm and 6.2

Thanks again !