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"We simply can't ensure that ivory listed for sale on eBay is in compliance with the complex regulations that govern its sale," said a spokesperson for the online auctioneer.

Exceptions for some items with small amounts of ivory, such as pianos, will be made, although the items must have been made before 1900.

Items such as a chess set that have a large amount of ivory, regardless of their age, will not be permitted for sale.

EBay banned cross-border sales of ivory products last year, but sales within the USA “continued to be a concern within the company and among stakeholders.”

The move was welcomed by animal welfare groups.