What's the difference between the 3711 and 3713 Do

Can anyone tell me the differences between these two Doppels?

Thanks,
Larry

Primarily....

When I saw the "Do" at the end of your heading...

... I thought it was going to say: Don't say two is the difference.

Some real information is on the link below and please follow the thread.

Cheers from the cellar

Doppelchrono variations (large image)

A view of the domed crystal for reference.....

and a couple of other shots of the 3711.

Bill

Love that discoloration of the Tritium Bill!!! nt

that is awesome "patina!" nt

iwc