Here’s the sword that Bae used when he confronted Hook…
Bigger version: http://screencapped.net/tv/onceuponatime/displayimage.php?album=1449&pid=1657385#top_display_media
THAT blade does look to me like it could be the one that Emma’s carrying around with her Starbucks. Whether or not it’s the same thing she’s holding in the other pic, I’m inclined to say it’s not that long, but agree that the angle could be deceiving.
Whatever the weapon is that he’s given her in that scene though, I do think it’s something he once gave to Bae. Hook is speaking, and Emma’s holding it carefully and listening intently. That means there’s some information that goes along with that particular weapon. That would fit with something along the lines of, “I gave this to Baelfire once, during the short time he lived on the ship, and I taught him how to fight.”
Then Hook will smile sadly at the memory and I’ll collapse in a pile of FEELS. And Emma will look at it and have a moment, because she believes Neal is dead, and here’s an object that he touched and she’s touching it too, and I’ll officially be a puddle of FEELS on the floor.