I bought Lydia's PowerShot from her, so hopefully this blog will be kept more up to date! :-)
This is Essie's freeze brand. The first mark that looks almost like a square "U" is the BLM symbol. The two arrows on top of each other are the numbers 9 and 7 which signify that she was born in 1997. The arrows that are underscored is her ID number which is: 565371. The angle of each arrow stands for a certain number - a pretty interesting system! I finally found instructions on how to read the brands and that's how I figured out what it was.