1) Did the Scots did in fact use swords with trefoil terminations such as on this sword? Is this an authentic repro?
2) Is is correct that such trefoils may be a rare variant and possibly precede the use of quatrefoils?
3) What is the estimated time period that such trefoil terminations were used? Approximate date of this sword used for this reproduction?
4) Is there any printed resource that could confirm such information?
Many thanks for your help.

Highland long sword with trefoils [ Download ]