"That's not the Rolex I pawned with you..."

[Pitfitter]

Going back to the topic, wouldn't it be wonderful if the chap is denying it is his watch that you then don't have to give it to him, just say you will wait for the real owner to come in.

And/Or ask for proof of ownership?

[jedly1]

There’s nowt as queer as folk

[Rinaldo1711]

There’s nowt as queer as folk

Ain’t that the truth - what a chancer this plonker must be.