A large-scale Jackson Pollock drip painting titled, "Number 7A, 1948." Crystal Lau | CNBC A version of this article first appeared in CNBC's Inside Wealth newsletter with Robert Frank, a weekly guide to the high-net-worth investor and consumer.  Sign up  to receive future editions, straight to your inbox. Nearly $2 billion worth of art will come up for auction in New York over the next week, marking the biggest test of the art market since the start of the Iran war. The major auction houses are counting on blockbuster works from famed collections to carry the market past the gloom of geopolitical conflict and volatile financial markets. Despite growing fears of a slowing global economy and a potential lack of buyers from the Middle East, dealers and art experts say the rapid rebound in the art market that began last fall shows no signs of slowing.…