Hey Dizz, good eye ... but unfortunately not quiiiiiite accurate. The 1665 DR was born with a "Superdome" crystal like what's mounted to the MBW at the right. My friend used the watch so hard in commercial diving and instructing that the crystal was always beat to heck. He got tired of having to lick the crystal to read the time (ewwwwww) so he had the RSC replace the Superdome with the later "Dome" tropic 39. That's what came on the "Great White" 1665s as well. So yes, it's flatter, but not from wear. I have a NOS Superdome tropic-39 sitting here in waxed paper waiting to be mounted to that case.
But...
The watch was worn since new by my friend, and it acquired its gouges the hard way. He suddenly died, and his wife said he wanted me to have it. So now it's my duty to keep it in good shape for my kids. I get out my tools to replace the crystal, but then I look at those gouges and ... I just can't. It means more to me all beat up than it would with a big gorgeous Superdome on there.
So, that's how your 5514 should look too. It was a tool watch so it should have been regularly serviced, and seals checked. The crystal should be beat to heck. The CGs should be getting pointy after 30 years of service. Right?