Reference library
How value is established in our fields, what evidence a specialist relies upon, and the difference between an auction estimate and a formal valuation prepared for another purpose.
Featured guide
An estimate is a specialist's considered opinion of the likely hammer range for a lot. This guide explains the evidence behind it, why it is a range, and how it differs from a reserve or a formal valuation.
Valuations · 3 min read
Valuations · 4 min read
How to obtain an opinion of value on a manuscript, book, autograph, photograph or work on paper: what to send, what a specialist looks for, and which kind of valuation you actually need.
Read the guide
Questions on Valuations
