correct crystal size and type for omega 165.009

I have looked at past posts thinking that this question may have been answered at some stage, but it was for a different model ( 165.002/ 165.001).

I am replacing a watch case for a badly damaged Omega reference 165.009 and have found a preowned case from The Netherlands without a crystal for a fair price. However, I have no idea if it uses an armored crystal or what size it is. . I was thinking of hunting down a crystal for when it arrives for me to install. I believe the bezel needs to be removed prior to installation which is not a problem.

Sure enough an Omega reference would theoretically help for knowledge or if I am lucky to find one privately online, but the size and type would be more helpful.!! Any info would be most appreciated!!! Big thanks to all for your responses!!!

thank you!!! If I am not mistaken, this is an armored 29.6mm crystal I have an empty packet with the reference px5140 from years ago which I used somewhere???
Yeah, you are not alone!!! We have communicated about this past!! I am a sucker for this and the 165.010