15thc perception on swallowtail merlons?

[ReneZ]

I used to have such a list, but I never looked at the dates these were constructed or added. It will be very easy to assemble a list of 50-100 places in a concentrated effort of a day or two.

When I did this, the search engine to go to was altavista.
It returned fewer hits. Google can now do much more, but it tends to always concentrate on the same subset of examples, which is why it requires a dedicated and concentrated effort to look a bit more deeply.