One of her items was an artefact from the Roman era that had survived 2,000 years and was tipped to be a big moneymaker.
The auction kicked off with Colson's antique rotary knife device, which he purchased for £55. However, his team admitted they forgot to explain that it was a knife sharpener in the auction description, which left a mortified Colson saying, "Well, it's all gone wrong!"
When the item sold for £55, Colson turned around at the crowd and yelled, "You're all tight in here, aren't you?! It's a good job we've got the internet."
Moments later Christine's Art Deco bowl which cost her £120 was up for grabs and went for £190 to her relief. A furious Colson then turned around and asked: "What's going on?!"
The two contestants started to rile each other up as the competition intensified during the auction, and Colson was struggling to make any money. "Don't cry; it's OK," Irita told him.
Luckily, one of Colson's items did sell for a £40 profit, but Christine was reining supreme, with her Roman pot selling for an incredible £220.
At the end of the episode, it was revealed that Colson lost money while Christine made a profit of more than £100.
Reflecting on the results, Christine asked Colson: "You were so confident, what happened?" He replied: "I just have a certain style of things I liked and clearly other people don't like them I guess."
Celebrity Antiques Road Trip episodes are available to watch on BBC iPlayer.