15thc perception on swallowtail merlons?

[Mark Knowles]

No, any building will do.

Now I don't know when the ghibiline merlons were added. I would be very surprised if they date from after 1469. They probably date from after 1430 and before 1469.

This Abbey is in San Nazzaro Sesia. There must be other abbeys with swallow tail merlons.

Did you verify that there were swallow-tail battlements in Bellinzona in the early 15th century? I believe there were, but I think that proving it would not necessarily be easy.