it's is strange that a 1099B would show sales price, no cost but a $10 gain. there are 3 types of reporting for any security sale to the IRS type A or D - sales proceeds and basis reported (A is ST, D is LT)
type B and E - sales proceeds reported but not basis- basis is provided to taxpayer
type C and same as B and E but basis not provided.
from what I've seen is total proceeds are reported to the IRS.
the issue is do the IRS records show $1500 more in proceeds than you reported. They have would have no way of knowing what your gain is. And by the way, it's strange for a 1099B to show sales price, no cost but a $10 gain.
