An unnamed company received 'insider tip-off' that royal baby would be a girl. But when Prince George was born they were left with useless merchandise. Faulty plates are now being sold off in lots of 50 costing £195. The birth of Prince George has been a massive boon for many manufacturers, but one company lost out after it produced 5,000 commemorative plates celebrating the arrival of a 'Royal Princess'. Other objects produced to mark the historic birth this week include Lego, dolls and an official porcelain collection - but most had the wisdom to wait and find out the baby's sex before launching their memorabilia. However, one unnamed firm supposedly had a tip-off from a royal insider that the Duchess of Cambridge was set to give birth to a girl, and designed plates with the message: 'To celebrate the birth of the Royal Princess'. The family-owned company is said to have had 'complete confidence in their inside man' - but on Monday evening, it was announced that Kate and William's new baby was in fact a prince. When the future monarch turned out to be a boy rather than a girl, the company was left with a vast amount of unsellable merchandise.