These are all of the collectibles (Treasures, Journal Entries, Journal Notes, Optional Conversations) that you can find in Chapter 2. There are no collectibles in the Prologue, Ch. 1, Ch. 4, Ch. 5 and Ch. 7.

0:04 - Treasure #1 (Panamanian Cat Pendant)
0:28 - Treasure #2 (Navaja Folding Knife)

Check out the full guide: http://www.gamerguides.com/uncharted-4-a-thiefs-end/information

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