I just finished getting to level 4 tenshodo. I went 32 thief/nin with two swords, a warp scroll and otherwise naked, went around one-shotting everything in giddeus until I had 27 necklaces with a 28th in the queue (dropped all other loot.) Use the scroll (28th drops into inventory,) turn them in, lather rinse repeat. Was also grabbing them off the auction house as they appeared so I was turning in about 32 or 36 per trip. Took about 4 hours total. Thought 212 necklaces would take much longer!
Now on to Norg, I wants me Utsusemi!
Edited, Mar 3rd 2012 8:30am by DracMonster