This settled the matter.

The coachman's arms were round the horse's neck in a moment, and he fairly broke down and cried.

The cab-master had never been so fond of a horse himself as to hug him like that, but he saw in a moment how it was.

And he must have been a good-hearted fellow, for I never heard of such an idea coming into the head of any other man with a horse to sell: instead of putting something on to the price because he was now pretty sure of selling him, he actually took a pound off what he had meant to ask for him, saying to himself it was a shame to part old friends.
Diamond's father, as soon as he came to himself, turned and asked how much he wanted for the horse.
"I see you're old friends," said the owner.
"It's my own old Diamond.

I liked him far the best of the pair, though the other was good.