Neptune Fine Art has three total locations, with two in New York. The gallery on 33rd Street operates by appointment and on unspecified days and times that can be learned by calling. The business is owned by Christine Neptune, who has more than 20 years experience in auction houses, museums, fine art publishing and galleries. Her inventory, which carries modern art, contemporary art and new editions, includes works from artists such as Wolf Kahn, Alex Katz, Kate Shepherd, Jennifer Bartlett and Bridget Riley.