Crypto 8 (M)

We’ve been tracking some thieves for weeks. We recently found this page ripped out of a book with the following secret coding attached to it.

What have the thieves stolen and where it the merchandise now?

3:12:10 / 3:3:10 / 3:5:7 / 2:4:5 / 2:1:9 / 1:8:3 / 2:2:10 / 3:14:8 / 3:5:4

Page1

The thieves stole some and it's with the .

Correct
Incorrect