The Bruné workshop can write papers of authentication including a detailed condition report for your instrument, or one which you are contemplating purchase. In every case, our opinion is of the instrument itself, never the owner, the seller nor the buyer. Our opinions are relied on by major museums, auction houses, collectors, players and other dealers, and we provide this service based on the time required to thoroughly examine and evaluate the instrument in our shop, typically costing between $100 and $500.
These papers can only be written for instruments which we personally examine in our shop using our equipment and examination devices. This cannot not done in the field, nor can it be done from photos. If you would like to send us an instrument for authentication and condition report, please read our packing and shipping instructions first.
Whenever possible we try to identify the actual author of an instrument if the label is determined to be incorrect, unauthentic or non original, although this is not always possible. Our authentication and condition report includes a two page letter covering the description of the instrument, materials used, the history (when it can be determined) and a statement of the current condition, alterations and previous repairs if any. When necessary we will supply an auxiliary fact sheet and additional pages of explanation which we may document with photos from our archives to show how we arrived at the opinion as stated in the report. We rely only on our own extensive archives of known authentic instruments when making comparisons of details supporting our opinion.
It is always better to have this information BEFORE committing to buy an instrument. Please note we no longer write APPRAISALS for value due to the new IRS rules. We prefer to let the market tell us what the values are. However, we do not trust the market to authenticate for us.