Deductions & credits

How would I handle the following situation:

 

Receiving a 1099-K form that is a combination of some items sold with intent to profit or simply had increase in value as a collectible, but also includes personal items around the house sold to recoup some money from (at a loss) as well as sale of items (none that would require an appraisal) that were received as an inheritance (which I assume would have a cost basis close to what it sells for and thereby not really contributing to Self-Employment income)?