J. Greenstein & Company, Inc.

New York has 100 auction house listings in this directory, which is enough that scrolling top to bottom isn't the fastest way through it. Narrow by neighborhood instead: 10018 alone accounts for 5 of the entries, with smaller clusters in 10001, 10021, and a handful of other Manhattan zip codes. Of the full set, 95 listings show a phone number and 82 link to a website, so most give you a quick way to check hours or reach someone before you call. Fewer carry both, so it's worth glancing at a listing's details before you dial.

None of these entries carry a Sponsored tag, since paid placement isn't active in this category yet, so what's on the page is an unranked list rather than a promoted lineup. If you run one of these auction houses and notice a wrong number or no website on file, you can claim the listing and add the correct information yourself. That small fix saves the next person searching 10012 or 10017 from hitting a dead line or a blank search result mid-search.