Watch the embedded video. I have edited the three main fights of MGR movie Ayirathil Oruvan. Two fights with Nambiyar and the climax fight with Manohar. MGR and his opponents have used different type of swords.
In the first fight the sword (same type seen in MGR memorial) used is thin blade having complex hilt (guard) which protects the hand including the little finger. Knife in one hand and sword in another watch the action of MGR, he is very fast even in slow motion this fight with Nambiyar appeared to be in normal speed.
The second fight is on the beach both having heavy blade, for Nambiyar the guard (between the blade and the grip) is rounded and fully protects his hand but for MGR the guard is cross shaped one sided less protection for his hand. Both the swords are double edged (Roman type) the fight is little slower compared to the earlier fight because the blade is heavy and the environment is slippery. Watch MGR's cool comment.
The climax fight is between MGR and R.S.Manohar, some of the shots are taken in outdoor and more important shots filmed in Studio. The sword type is fencing swords which is flexible, both of them are very fast, and MGR performs more style. Watch the leg movement typical fencing style, MGR thrusts his leg forward and lands over Manohar's right shoe and nails his movement for a second and pushes him quickly to the floor. Inside the ship, when Manohar thrust his sword, the blade is different the sword appears to be less flexible. And the next frame it turns to fencing sword again. Watch the body movement of MGR, he takes 360 degree turn and immediately 180 degree turn, when I tried to turn like that, I felt dizzy but no such feeling for MGR he goes on fighting, single shot! MGR is legendary Action Hero and the greatest swordsman in Indian film.