15thc perception on swallowtail merlons?

[DG97EEB]

Hi Ed, there's something I still don't understand about your map. 

"Where building authenticity is documented, these swallowtail merlons are overwhelmingly 19th–20th-c. reconstructions. The manuscript depictions may be more reliable evidence for medieval merlon form than the standing buildings. Absent buildings show as “undetermined” (no reliable source found), not as original."

Entries are only added to the map when we are near-certain that they had swallowtail merlons by 1450. These are considered good evidence - that's kind of the whole idea of the map.

And that's what I thought, but I've run deep research on 3 different systems, and this seems to be the consensus. I'm also actively looking up against Voynich Ninja so if something is mentioned it picks it up.. so always possible that I'm mistaken and I've missed a reference, but this seems to be the real state of it... Of course if it's completely balderdash, then I will update