How can I tell whether I have a LG or Samsung screen on my MacBook Pro with Retina display?

Trying Googling "VX2450 SERIES". Surprise!

Yea....thats my external 23" LED thats hooked up via firewire => DVI

Thank you, jedlh. Further research confirmed your statements and calibration tweaked/improved a couple of the features which had concerned me. The black still is not as black as I hoped, though.

when I enter the code into the terminal, it asks me to get X code, but won't install it. What is X code?

None of those commands give me a number 2

here is the result

$ ioreg -l -x | grep IODisplay | xxd -p | grep 4c50| wc -l

7

$ ioreg -l -x | grep IODisplay | xxd -p | grep 4c534e | wc -l

0

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