Domed crystals used by Rolex and Tudor

[perry911113]

I am trying to determine when and if Rolex and Tudor used domed crystals from new on the following watches

1970 Rolex 5500
1957 Rolex 6494
1963 Tudor 7934
1956 Tudor 7909

I am in the process of looking for a vendor to supply domed crystals for all of the above.

I believe the Rolex 6494 and Tudor 7909 crystals will crossover and work in either watch.

I also believe the Rolex 5500 and and 1500 will cross over and interchange with eachother.

I am not certain what other watch crystal's crossover to Tudor 7934.

If anyone can shed light on the above it would be helpful to many forum members.

I will also shed light on what I find out on my side.

Peter