Hi. Can anyone help me. I have just recently found that Bonhams have used a portrait of a clockmaker in two of their sales catalogues some 6 years ago. It has only just been brought to my attention. I wish to contact them regarding a payment for this unauthorised usage. They were use full page for the promotion of the sale of his clocks. Can anyone help with were I should start the pricing for this knowing that I will have to negotiate the final fee. Thanks for your help.