On Wednesday, Tom, a vintage car dealer, placed an advertisement in a weekly motor sports magazine offering to sell a Triumph TR6 for 10,000, cheque accepted. Chris saw the advertisement on Thursday and immediately posted a letter to Tom saying that he would be willing to pay 8,000 cash and leaving his work mobile number. On Friday morning, Tom called Chris on his mobile number. Chris did not answer, so Tom left a message which said: I'd prefer a cheque for the advertised amount. So the car's yours for that unless I hear back from you to the contrary.' Chris picked up the message and posted a cheque for 10,000. However, at 6.45 p.m. on Friday evening Tom decided not to sell the car to Chris so he called him back on his mobile and left another message. Chris did not use his work mobile over the weekend and had left it in the office which had closed for the weekend when Tom called. Chris did not pick up the new message until early Monday morning. Chris's letter arrived at Tom's address on Saturday but was not opened by him until late Monday morning. On Saturday, Tom sold the car to Sam for 8,000 in cash. Chris now claims that Tom is in breach of contract. Advise Chris of his legal position.