Antique Metal Not Dropping

When Obsidian Sentinel are killed in their first form, I believe that they have a chance of dropping the antique metal. I've been farming them for quite a while now, but I have received none. Is this a problem of my luck, or does antique metal drop from another mob?

 

This is from Wynndata

There does not be a page on the wiki for either the metal or a full page for the Obsidian Sen. Though the wiki doesn't claim that it drops it. So, eh, might have been moved to another mob? Or you just might be unlucky.

 

Hmmm...that might be the case. I'll try grinding more tomorrow.

 

I believe it is just pretty rare. I grinded them quite recently and it took some time to get one.

I recommend loot running around Cinfras, you might have better chances with loot chests.

 

Alright, thank you!