Beautiful Tibet Inc has a nice assortment of Tibetan objets d' art. I recently saw a spectacular prayer wheel and some of the cloth items, shaws etc. are amazing. Nice , friendly staff.
B-4 It Was Cool Antiques has an eclectic mix of treasures from days gone by. They come up with some interesting items, I would guess as the Lower East Side gentrifies probably lots more interesting items will probably appear in the local shops. Worth a look when in the Soho LES area.
Manhattan Arts & Antiques Center is a collection of dozens of small but up class antique dealers. Much of what you see on display here is simply gorgeous. You can haggle a little, they dont like to admit it but they give decoraters a hefty discount so you should be able to get a small discount if you push it. Great stuff here.
Brigandi Coin Co. is an interesting place to drop by for a visit. They have old autographed baseballs, not the regular Mark McGwire balls you see elsewhere, the real good stuff signed team balls from 40 or 50 years ago. That being said the prices are kind of high but hey it is Manhattan. The service is also a bit unfriendly but there is enough to see here and maybe if you find something you cant live without you wont mind paying a few bucks more than you might elsewhere.