A restorer could request dimensions, observed problems and the parts the customer wants retained. Detail photographs would prepare the assessment. The quote would distinguish functional repairs from cosmetic finishing. Discoveries during the work would lead to a new proposal before the accepted scope changes, leaving the owner a clear decision to make.
An illustrative example to adapt to your business. It does not represent a completed project in this municipality.
Should the original appearance be promised?
Not when it is undocumented or the material cannot support that outcome. Explain the agreed goals and use photographs to illustrate the options being considered for the piece.
How can several pieces in one set be tracked?
Give every element an identifier and photographs. Customers can then approve interventions separately and understand why the amount or type of work differs between pieces submitted together.