Which iPad version do I have?

Append the last three characters of its serial number to http://www.everymac.com/ultimate-mac-lookup/?search_keywords= and load the page.

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Go to Settings>General>About and check the model number.

You have a Black/Space Gray, 64GB iPad Air (1), sold for Verizon, (Though it can be used with any GSM carrier really).

Identify your iPad model - Apple Support

Is it new or pre-owned? If pre-ownded, you may want to read through the following article, and make sure whoever owned previously followed all the steps:

What to do before selling or giving away your iPhone, iPad, or iPod touch - Apple Support

You have a first generation iPad Air.

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