When you want to know more about a vase you own or have the intention to buy one, you can ask for an appraisal.
There are two possibilities:
Option 1 - Small Appraisal
You can send pictures as many as you like to email@example.com and get an opinion of the value and condition of the vase with the restriction that I never had the vase in my hands so I cannot be a 100% sure about cracks nor chips which are often not visible on pictures.
Options 2 - Formal Appraisal
For this appraisal you need to send 7 pictures, the four sides and the top and the bottom and the signature to. These pictures will be send back to you in a pdf document, signed and stamped for insurance or inheritance purposes, compared to other examples and and references to literature with similar vases, a description of the condition shown on the photo's and an estimated value based on these photo's.