Omega crystal help: 1970 Constellation

I just got back my 1970 Constellation from the local watch tech, serviced ready to go, but I was hoping someone might know of an alternate Omega crystal I could have installed instead of the magnification one...

Is there an genuine Omega crystal replacement that fits this model watch and is a simple, non-mag version? Preferably more of a low profile design, too. Do you know a specific part number?

The one in place now I ordered to give my watch guy and is the one that Otto Frei sell for this case number, but this watch even had a signed Omega crystal on it when I got it that did not have the mag lens. I've seen them for sale that way, too. I think I'd like the look of it better without it.

Any help would be really appreciated.
Thanks!

168.029.
But I think I just figured it out. Otto Frei has a non-window version listed right above the other one that I must have missed the first time.

I ordered a PZ5118LL, but I should have ordered the PZ5118

Thanks for the follow up!