CY GOOD TO SEE YOU POSTING AGAIN.
THATS AN EXCELLENT COLLECTION AND IS A EXCELLENT RESOURCE FOR COMPARING THE DIFFERENCES IN MATERIALS AND AGE OF NIAS SWORDS.
I HAVE A NEWER VERSION I PICKED UP A FEW YEARS AGO BUT PAID THE APPROPRIATE PRICE FOR IT JUST TO HAVE AN EXAMPLE FOR THE COLLECTION. I HAVE SEEN A FEW GOOD OLD ONES IN AUCTIONS I COULDN'T ATTEND OVER THE YEARS BUT THEY ALWAYS WENT FAR BEYOND MY MEANS. BUT PERHAPS I WILL GET LUCKY SOME DAY AND ONE WILL DROP INTO MY LAP

I ALSO HAVE A MORE PLAIN SHORT SWORD AND KNIFE FROM NIAS WHICH WERE FOR USE BUT NOT VERY IMPRESSIVE.
THE FIRST PICTURE YOU POSTED IS INTERESTING AS THE ENDS OF THE FETISH BALL TEETH LOOK LIKE FINGER TIPS GRASPING THE SWORD FROM THE OTHER SIDE. I SUSPECT THAT IS COIENCIDENCE AND JUST MY IMAGINATION BUT YOU NEVER CAN TELL.