Correct Crystal for Tudor 7928

[rdschicago]

Hi, can any of you more experienced vintage guys tell me if this looks like the correct crystal that originally came with this 1961 Tudor 7928 PCG with gilt dial? A fellow collector looked at it and told me he thought it came with a super dome crystal and this one did not appear to be super dome from his perspective? Could someone also please tell me the model number for the crystal that originally came with this watch so I can purchase one if this isn't the correct one?

Thanks.