Heritage Auctions, the world's largest collectibles auctioneer, now has more than 1 million online bidder members using its platform to buy and sell fine art, jewelry, luxury real estate, fine wines, intellectual property and collectibles including rare coins, comic books and sports and entertainment memorabilia. Heritage officials said the firm the world's third largest auction house now is adding clients at a rate of about 5,000 a month.

"Our dedication to collectors, our early and continuing embracing of mobile technology, and Heritage's free database of more than four million prices realized have attracted users from all over the world," said Steve Ivy, CEO of Heritage Auctions. "Our 1 million online bidder members, from the United States and 185 other countries around the world, are buyers and sellers seeking unique artworks, luxury goods and record-breaking collectibles."

"We have added more than 150,000 new clients since January 2014, with an increasing number from fast-growing, affluent areas across Europe, Asia and Latin America. Institutions as well as individuals are increasingly joining the site to find rare and relevant additions to permanent exhibits and collections," explained Ivy.

Heritage's website, HA.com, enables consigners and bidders to participate in sales across 40 categories, weekly auctions and the company's Make Offer to Owner program that offers thousands of examples of fine art and collectibles for purchase or bids. The successful program is still in Beta state and Heritage is planning significant improvements to make it even easier to buy and register previously auctioned items.

"Each 'Make Offer to Owner' listing can be seen by thousands of users, and this popular feature has doubled in the past two years and 'Make Offer to Owner' is expected to reach $3 million by the end of 2016," Ivy said. "The program is another example of how we've increased the number of convenient tools collectors can use to quickly locate and own precious objects,"

Additional services recently added include Domain Name and Intellectual Property auctions, and extended bidding on high-end sports collectibles auctions. HA.com also allows members to catalog their own collections, register their ownership of items sold at past auctions they have acquired from other sources, and draft want lists which instantly alert them when a desired item becomes available.

"Heritage was built — and is owned by — collectors, so we think like collectors," Ivy said. "We want our clients to feel confident and comfortable so they can buy and sell on their own terms."

Heritage Auctions celebrated its 40th anniversary this year, and now has 600+ employees, and total sales of more than $800 million in prices realized across 40 different collecting categories.