Indian katar - why so expensive?

[Drabant1701]

Stockholms auktionsverk held an arms and armour auction today. Among many fine items was a beautiful katar. I had a very low estimate so I kept my ey eye on it. And it went for almost a 100 times the estimate. I can see that its a very fine item. And if it is old, 17th century, then the condition is really good. But I feel I´m missing some vital information to why someone would pay that much for it. Can any of the more seasoned collectors of indian weapon enlighten me as to why this katar is so desirable?

https://online.auktionsverket.se/2005/773181-katar/